Last Updated: 31/12/11 2:51pm
Thanks for joining me today, stay tuned for a full match report and all the reaction to today's shock scoreline.
And the full-time whistle goes! An absolutely astonishing result at Old Trafford as Blackburn ruin Sir Alex Ferguson's 70th birthday.
Evra goes close, before Jones drives in a shot which is heading for goal before it strikes his prone team-mate Keane on the line!
Bunn, who has been taking ages over his goalkicks all afternoon, is looking even more lethargic now.
Final change for Blackburn as goal hero Yakubu makes way, to a deserved standing ovation, for young striker Jordan Slew.
Changes for both teams as Goodwillie replaces Formica for Blackburn, while Rafael makes way for Keane, who is making his senior debut.
Valencia earns another corner for United, which Blackburn can only half clear before Berbatov heads narrowly over at the far post.
Nightmare moment for David De Gea as he fails to gather the corner, with Grant Hanley beating him in the air, with the Blackburn man following up to nod into the net. Utterly astonishing.
Nani does very well to keep the ball in on the touchline, but his cross is again met by Samba's forehead.
Samba heads away, but United keep the pressure on and Nani's next corner goes all the way through to Valencia at the far post, but he drives over the top.
Pedersen's kick is met by the head of Hanley, who gets there ahead of De Gea, but diverts his header wide of the target.
Formica goes close for Blackburn with a shot which deflects off Carrick's knee and flies just wide of a diving De Gea's goal.
Nani works a yard of space out on the left of the area and crosses low to Welbeck who fires wide with his first-time shot.
Decent little spell for Blackburn ends when Morris' attempted cross deflects back off him and goes out for a goalkick.
Nani forces a corner and from the kick Carrick is looking for a penalty as he goes down in the box, but Dean is not interested.
United are camped on the edge of the Blackburn box and get back on terms with another smart finish from Berbatov. The Bulgarian fires home first time after Valencia's excellent run to the byline and pull-back.
Straight from the kick-off and United reduce the deficit. Valencia's cross is not cleared, Rafael shoots and Berbatov stoops to head home from close range.
Staggering, staggering scoreline at Old Trafford. Yakubu takes the ball with his back to goal, turns away from Carrick and Jones before bursting into the box and driving the ball under De Gea.
Better from United. Valencia finds Berbatov, with the Bulgarian feeding Nani. The winger cuts back inside and fires a powerful curling shot narrowly over the bar.
The free-kick is headed away before Valencia earns a corner with the ball going behind off Henley, but the chance is wasted.
Anyone get on the 20/1 on Blackburn to win before kick-off? Sky Bet now offer 7/2 on Rovers to triumph. The draw is 2/1 and United are still 4/5 favourites despite trailing.
Astonishing half-time scoreline at Old Trafford as Blackburn lead. Ferguson had plenty of time to plan his team-talk and you can bet that the United players will be getting the full hairdryer treatment.
Three additional minutes will be played. United have a free-kick in a decent position outside the box.
Decent chance for United as Nani gets a shot on target from inside the box after Evra's cross, with Bunn diving away to his left to push the ball away.
Good physical battle between Yakubu and Jones, with the young England international winning this one.
Another half-chance for Blackburn after some good play from Yakubu and Pedersen, but Rochina drags his shot well wide.
Evra feeds Park down the left and his cross into the box is just too high for Nani, who moments earlier was clutching his ankle in pain off the field. Looks OK now.
Hesitation from Evra allows Rochina to steal in ahead of him, he plays the ball square to Formica, but the opportunity for a snap-shot is not taken and United clear.
Berbatov is risking his luck here. Another long ball from Bunn comes into the United box, with the striker again tangling with Samba, but nothing is given.
United may have had 65% off the possession so far, but the only stat that matters is that Blackburn still hold their shock lead as half-time approaches.
The kick comes in and Samba rises above Berbatov to head goalwards. De Gea comes to gather and is impeded by Yakubu.
Another concerted spell of United pressure sees them camped on the edge of Blackburn's box probing for openings. A yard of space opens up for Nani but he opts for power again and lashes over.
Formica tries his luck from range, but the ball deflects off Jones and wide. Referee Dean awards a goalkick, much to Blackburn's disgust.
Nice turn and shot from Hernandez outside the box has Bunn diving away to his left, but the ball flashes past the post.
United go very close to levelling as Nani's corner is flicked on by Berbatov to Jones, but his close-range effort is charged down by a combination of Bunn and his brave defenders.
Rochina breaks from defence and plays a one-two with Yakubu before attempting an ambitious shot from 40 yards out. De Gea throws his cap on it.
Rafael sprays the ball out to Welbeck on the left, who cuts it back to Evra. The Frenchman falls under the challenge of Petrovic, but Mike Dean waves away the penalty appeals.
Nani elects to flick the free-kick through his own legs square to Phil Jones, whose shot is charged down. Not really the best time for show-boating.
Great penalty from Yakubu as he calmly sent De Gea the wrong way from the spot. The United goalkeeper's first action was to pick the ball out of his own net.
Nani's kick to the near post is cleared after Carrick challenges Bunn, but all the play continues to be in Blackburn's final third. David de Gea could still be sat in the dressing room for all he's done so far.
Evra walks away from Formica, but his cross is poor. Rafael then hits a shot which is charged down, before Valencia forces a corner as United turn the screw.
Utterly woeful free-kick from Nani as he fires it straight at the Blackburn wall, before earning himself a silly booking for tripping Yakubu.
The home side surge forward again with Valencia feeding Nani down the right, but the winger's cross is too deep.
United cut through Blackburn's defence again and Welbeck looks to find space before Hanley boots the ball clear.
It's a bit quiet inside Old Trafford today. Perhaps the rendition of 'Happy Birthday' took it out of everyone.
Nani is given too much time and space outside the area after being fed by Park, but he slashes his shot high and wide of the target.
Decent chance for United as Welbeck finds some space on the right of the area. Hernandez then attempts to wriggle free before Nani's shot is blocked by Hanley.
Nani's first kick comes to nothing and his second attempt to cross is headed away before Jones is penalised for sliding in on Formica.
Blackburn have had a couple of decent spells of possession, but it's all deep in their own territory. Nani attempts to find Hernandez, but Bunn is out to gather.
First attack from United sees Danny Welbeck break from midfield before feeding Nani, whose cross floats away over Bunn's crossbar.
There's even a rousing rendition of 'Happy Birthday' for a smiling Ferguson before kick-off. No cake, though.
Roger Clarke writes: "Looking forward to a convincing home win today. I can see plenty of goals in this one - and with two strikers looking to show SAF that they are good enough to play more regularly, I recon it could be the Berba vs Welbeck show today. I expect to see both bag a brace with one or two more from Nani and Chicharito. it was a 7-1 hammering that saw the end of Big Sam, could history repeat itself??"
Sir Alex Ferguson coy when quizzed on Rooney's absence pre-match. The manager confirms his star striker has missed a few days training this week with "little strains here and there" and hopes he will be fit to face Newcastle on Wednesday.
Match odds today come courtesy of Sky Bet. You won't get rich backing United at 1/8. The draw is 7/1 and Blackburn can be backed at a staggering 20/1.
OK, kick-off is now less than 10 minutes away as United look to go into 2012 top of the pile, while Rovers are desperate to scramble away from the foot of the table.
Chris Evans (that one?) says: "Come on Rovers use the fighting spirit you had when you played Liverpool and think back to when we beat Man Utd 2-1 at Old Trafford and I think we can win. Kean and Venkys out!!!!"
Stu in Berkshire writes: "Happy 70th Sir Alex, today's prediction appropriately and could only be 7-0 #MUFC #HappyNewYear."
Man Utd are the only team to have scored in every Premier League game this season. Since conceding six against Man City, they have let in just two goals in the last nine matches and kept seven clean sheets. Sir Alex Ferguson's side have scored 1,499 Premier League goals.
Rovers have dropped more points from winning positions than any other team in the Premier League this season (14). Blackburn have won just one of their last 18 Premier League away games (W1 D7 L10). Rovers have kept just one clean sheet in their last 28 Premier League away games.
Manchester United are unbeaten in their last 10 Premier League games against Blackburn, winning seven. United have won the last seven games in all competitions against Rovers at Old Trafford.
First person to predict anything other than a United win is Pat Robinson, who says: "United will not have it their own way, they might think they're bigger than they are but Blackburn will work hard 1-1."
Dom Rogers (Blackburn Fan) writes: "I really don't think we have a chance today probably something like 4-0, hopefully big phil gets a goal to give us rovers something to cheer about!"
Gunners fan Jason Barnes says: "I can see United cruising through this game with a 3-0 win. I reckon that Berbatov will bag two and Hernandez will grab the other. However, as an Arsenal fan I'm hoping that Blackburn grab a cheeky point or three!"
Moiz Paracha adds: "I wonder is Sir Alex Ferguson not putting Rooney in his starting line up because he doesn't want to risk his injury and wants to save him till some other players come back? I think it will be 4-0 to United with a Berbatov hat-trick."
Zach Kingsbury writes: "Easy 6-0 thrashing from United today. Blackburn won't have a chance the way we're playing at the moment. Berbatov (2) Nani (2) Hernandez and Jones with the goals! Happy 70th Birthday Ferguson!"
If you want to have your say on this afternoon's match, then drop me a line to email@example.com, or on Twitter @skysportsrobp
The past 12 months have been a year to forget for Steve Kean and Rovers. The Ewood Park club are staring relegation in the face and protests continue against their under-fire boss and the club's owners.
Victory over rock-bottom Blackburn will see United move ahead of bitter local rivals City into top spot, with Roberto Mancini's men not in action until tomorrow. A draw would still take Ferguson's men top, but that would surely be regarded as two points dropped.
Sir Alex Ferguson enjoys his 70th birthday today and will have an additional reason to celebrate if the Red Devils can end 2011 in top spot.