in fifa 64, juninho walked out the tunnel 30 minutes into the match, and played in slow motion for the rest of the game.

it was impossible not to score against mark schwarzer in fifa 2001 from distance.

of course everyone remembers fat ronaldo in iss.2. 0.52. probably the best football game intro of all time.
http://www.youtube.com/watch?v=NNnm_TfRghQ