let me recall my mental list ^_^
-Deathrow for the Xbox (just as a single team though)
-Pokemon Ranger for the DS *easy*
-Portal, like so many others
-Scott Pilgrim vs. The World (Just with Kim in the first sitting though...)
-Halo 3, at least the first time
-SWAT 2 for PC, both Terrorist and SWAT campaigns *easy*
-Way of the Samurai 2 for PS2, but that's a really short game meant to be played over again
-MoH: Airborne (On easy though...)
-Alien Hominid *easy*
-Fire Emblem: Radiant Dawn (THAT was a tough one)
-Disgaea 2: Cursed Memories, none of the other Disgaeas though...
-Some old Kirby game for the N64 I think... the game was about a crystal or something...
-Star Wars: Episode 2 and 3 for Gamecube and PS2, respectively
-Deathsmiles for Xbox 360, MULTIPLE times- very short game
Hmmm... off the top of my head, I think that's it... There's probably more though...
EDIT- oops, I forgot all 3 Fables and SSBB ^_^