LOADED.
I always had fun playing it multiplayer, anyway.
Everything Red Pill said and;
Star Wars Battlefront II
Tekken 5
Virtua Fighter 4: Evolution
War of the Monsters
Guitar Hero if you're willing to shell the money out to play with 2 players.
Dance Dance Revolution
Karoke Revolution may be fun.
EyeToy games can be a fun diversion
Contra: Shattered Soldier
Burnout 3: Takedown
Burnout Revenge
Lego Star Wars
Tony Hawk games
Dragon Ball Z: Budokai 3
Street Fight Anniversary Collection
I'll edit this post if I remember any more of them.
Timesplitters: Future Perfect.
FFIX (it has two player =p)
Tony Hawks: Underground 2
ummm.... their were more but I can't remember...
I LIVE!!!!! AGAIN!
Any of the Twisted Metals, but preferably 1, 2, or Black.