"Troll can regenerate?" - most RPGs
"How do you crouch?" - playing hunter in L4D
"Go left" - L4D
"I'll flank em!" - TF2
"Nice Boom" - L4D
"A Tank can't REALLY throw cars, right?" - L4D
"Stupid noob" - TF2
"Don't worry, Heavy has 300 hp" - TF2
"Flashbang out" - Counterstrike
"lookizadogiemashizfaceancallimchips!" CoD WaW
"Rush em" - L4D
"I'll disguise myself as a Spy, they'll never see it comin!" - TF2
"MEDIC!" - TF2
"There won't be any enemies after the boss" - Ninja Gaiden
"That looks like me" - .hack G.U.
"Jump on the train?" - Mirror's Edge
"WHEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE!!!!!!" - driving in GTA IV
"Shotgun pwns" Gears 2
"Did he just run in there?" WoW
phew, thats all i can remember right now.