Last Updated: 27/05/13 5:41pm
Thanks for joining me this afternoon and for all your emails and Tweets - do stick around for all the post-match reaction and interviews.
Congratulations to Crystal Palace though, they are back in the big time thanks to a goal from 39-year-old Kevin Phillips - the script was perhaps written for the evergreen forward.
Joy and despair at either end of Wembley stadium as Palace fans celebrate and Watford supporters drift away, despondent.
Off the line!!! Great close control by Forestieri in the area, his shot is goalbound, but Ward heads it off the line!!!!
Watford are screaming for a penalty as Ward blocks Battocchio's shot - looked like the ball hit his chest rather than arm though so good decision by the referee. Abdi then fires another shot well over the bar.
No arguments about the penalty, it was a clumsy tackle by Cassetti. Palace are 15 minutes from the Premier League.
Kevin Phillips, in his fourth play-off final, against his old club, slams the ball into the top corner! What a priceless goal that could be!!!
Delaney is ok to carry on as Palace win a free-kick over on the left as Cassetti fouls Zaha. The set piece comes to nothing though.
Delaney collides with Forestieri and goes down holding his head, play briefly stops as he gets some treatment. You can feel the tension around the stadium now.
Great save Julian Speroni! The ball falls to Deeney in the six yard box but Speroni's outstretched hand pushes the ball away from the Watford striker.
I agree Charlie, he has been excellent today - plus he saved Anthony Knockaert's penalty in the semi-final too.
@charlie_rank says: "If Watford go up, a huge part of this is down to Almunia! Playing the best I've seen him play in years!"
The Championship's two top scorers couldn't find a goal in 90 minutes of tight and tense football - to extra time we go.
Zaha has the chance to win it but he elects not to go for the early shot, allowing Doyley to get in the block.
Cristian Battocchio hesistates as he breaks into the area and is drawn wide, he manages to cross it in towards Deeney though, but his overhead kick goes well over.
Another top save from Almunia!! Zaha feeds a nice ball into Wilbraham but his low shot is saved by the feet of the Watford stopper.
I think both sets of fans realise how important a goal would be now, it's a rousing atmosphere at Wembley.
Alex Geijo tries to play in Deeney but his neat pass is intercepted. Not really happening for Watford so far this half.
Zaha again causes trouble down the right, but his cross is headed away by Doyley - both of those players have been excellent this afternoon.
O'Keefe catches Doyley late on the ankle. O'Keefe has already been booked, but the ref lets him off with a warning. The free-kick then comes to nothing.
Troy Deeney is down for Watford holding his ankle, which gives everyone a chance to draw breath. Palace are well on top at the moment, with Watford looking nervy at the back.
Almunia saves again!! Nearly a disaster in the Watford defence as they let the ball squirm through to Wilbraham, whose close range effort is blocked.
Great save Almunia!! Zaha beats the offside trap down the left, cuts back and plays in O'Keefe, whose low drive is blocked by the Hornets 'keeper.
@therealphalesays: "Doesn't this remind you of a game Wigan won not long ago? I predict the same result, 1-0, goal late or in injury time. But who?"
Kevin Phillips is warming up on the touchline - could be the ideal man to turn to in this situation.
Great chance for Palace as Aaron Wilbraham finds himself clean through, but he hesitates, allowing Palace defenders to get back and his shot is blocked.
Doyley suddenly finds himself at the other end of the field, but he scuffs his shot and Palace can clear - there were better options for the Hornets defender then,
Williams tries to chase a long ball over the top but Doyley does well to hold off the Palace man and let the ball go through to Almunia.
Half time substitution news by the way: Matej Vydra picked up a knock in the first half and has been replaced by Alexandre Geijo - a blow to Watford that.
@charlie_rank says: "Watford look dangerous! Vydra to score first, vital if they go up, they have to sign some of the loan players permanently."
@JackDudesome says: "I think its even stevens at the moment. It'll all end with a 68th minute winner from one of them and end 1-0 i reckon."
@CameronEllis_ says: "May go paint a wall or watch the tumble dryer.. Seems more entertaining, I think whoever comes out fighting 2nd half will win."
"Sky Bet still make Watford the favourites to win at 2/1 in normal time with Crystal Palace 5/2 but extra-time is now considered most likely at 11/10. Matej Vydra is considered the favourite to break the deadlock and is available at 13/2 to do so in their half-time price boosts, while no goals in 90 minutes is now 2/1."
In the meantime, why not have your say? You can email me Tom.Mallows@bskyb.com or Tweet me @Tom_Mallows.
The game is there to be won though, maybe some half-time tinkering will result in a more exciting second half.
Well, it is perhaps no surprise given the size of the prize on offer, but these two teams have cancelled each other out so far. A fear of losing perhaps?
Jonathan Hogg nearly finds Abdi in the area but a Palace boot just deflects the ball away from the Watford man.
Matej Vydra gets his first sniff of goal when the ball breaks to him on the edge of the box but Damien Delaney gets in a wonderful tackle to block the shot for a corner - top defending that.
Palace have definitely had the better of things in the last few minutes but neither 'keeper has been tested so far. Still plenty of time for that to change though.....
Zaha is a useful out-ball for Palace but on this occasion the pass towards the powerful forward has too much on it and the ball goes out for a throw.
Wilfried Zaha bursts down the right flank again, gets into the area and tees up Owen Garvan, but his shot is well blocked by Lloyd Doyley.
It looks like Dikgacoi will have to come off. The exact injury doesn't look clear, but he is clearly devastated to come off so early in the game.
Dikgacoi is back to his feet but still doesnt look comfortable, this may be worse than first thought.
There is a break in play as Kagisho Dikgacoi goes down holding his face, it looks like he will be ok though.
Almen Abdi bursts into the area but Mile Jedinak gets in a great interception to prevent the Watford man from crossing the ball in.
Wilfried Zaha skips down the right flank for Palace, holding off two Watford players, but he can't quite stretch to get the cross in before the ball spins out of play.
Watford have probably edged it in terms of possession so far, but it's all in the centre of the pitch.
It's a cracking atmosphere at Wembley, both sets of fans getting right behind their team. No chances to speak of as yet though.
Daniel Pudil cuts inside and looks to get in a shot, but a Palace leg just gets an interception in and the Eagles can clear.
Nathaniel Chalobah looks for Ikechi Anya out wide, but the pass is over-hit and goes out for a throw-in to Palace.
Holloway seemed equally relaxed speaking a few moments ago, this is his third play-off final in four years, having experienced victory in 2010 and defeat in 2012, both with Blackpool.
"Enjoy the moment" will be boss Gianfranco Zola's final message to his players before they take to the pitch. Easier said than done I imagine!
Chris Green from Huddersfield says: "The Championship Play-Off Final is something I look forward to every season, and I'm glad kick off is imminent because this one is going to be a cracker. I fancy Watford to win this one 2-1, Vydra and Deeney to score the Hornets' goals."
Seven of Watford's starting 11 are on loan, with six of those from either Udinese or Granada - clubs co-owned by Watford owners the Pozzo family. The Hornets' use of the loan system - all within Football League rules - irked Ian Holloway earlier in the season, will he have another pop should Palace lose today?
@westy250909 says: "I think it's going to be very cagey, especially in the first half. I'm going to go with 2-1 Watford, Vydra first goal."
It's all smiles as Ian Holloway meets Gianfranco Zola on the Wembley turf - will we be treated to another Holloway dance if Palace win? His celebratory jig in the changing rooms after their win at Brighton became an internet hit.
"Watford and Crystal Palace were the Championship's two highest scoring sides in the regular campaign, making over 2.5 goals a likely winner at 10/11. Watford's Matej Vydra is the favourite to open the scoring, but Crystal Palace's Wilfred Zaha is well backed to make his mark on his final game for the Eagles before his big move to Manchester United - he's 5/4 to score in 90 minutes and 7/1 to grab a brace in normal time, while Wilfred Zaha is 12/5 to score anytime in his farewell appearance for Palace."
Palace: Speroni, Ward, Gabbidon, Delaney, Moxey, Jedinak, Dikgacoi, Garvan, Williams, Zaha, Wilbraham
I agree, Liam, Vydra could be a game-changer today. He hit 22 goals in the regular Championship season.
þ@LiamEmms says: "Fancy a Watford 3-1 win today. Vydra the key man, he'll score a couple of goals today!"
These two sides also met in the 2006 play-off semi-finals, with Watford winning 3-0 at Selhurst Park before securing a goalless draw on their own turf to secure a place in the final.
Watford meanwhile will be playing in this game for the third time and will be buoyed by the fact they have won both their previous Championship play-off finals - against Bolton in 1999 and Leeds in 2006.
Palace are set to play in their fourth play-off final and first since 2004. Back then they beat West Ham 1-0 at Cardiff to go with wins in 1989 and 1997. Their only play-off final defeat was against Leicester in 1996.
We will bring you the teams as soon as we have them but for now, why not have your say? You can email me Tom.Mallows@bskyb.com or send me a Tweet @Tom_Mallows. I'll do my best to post your views.
Palace meanwhile had to edge past bitter rivals Brighton and after a tight and tense goalless first leg, Manchester United-bound Wilfried Zaha hit a brace at the Amex to send the Eagles soaring to Wembley.
Watford came very close to going up automatically before being forced to settle for third place. They then earned a spot at Wembley in the most dramatic of circumstances - Troy Deeney's last gasp goal edging the Hornets past Leicester.
A lot is said about the amount of money at stake in this game, with figures ranging from £60-£120million. But lets just say the immediate future of the winning club will be transformed by earning a place in the top flight.