I'm going for 2 - 2 in normal time.
Goals from Ronaldo + Rooney and Henry + Messi, providing they all play.

And a 2nd from Ronaldo in extra time, so therefore 3 - 2 to Manchester United.

Chance of a red card too.
( WHARRGARBL, Tue 26 May 2009, 22:24, archived)

messi hattrick
ronney strops and is sent off
ronaldo trips over himself and brakes his legs on the posts
3-0 barca
(rigby happened on (and with added toothache), Tue 26 May 2009, 22:29, archived)