OK I have a bunch from one dude, lol!
"I'M RUNNING LOW ON VODKA... I... I mean ammo..."
"Why dont we give the monkey a gun, it might raise our odds!"
"This is the weapon I used to kill my first wife! It was accident... she talked too much."
"Even if I drank all the vodka in Russia, you stay ugly!"
"STAY AWAY FROM MY VODKA!!!!"
"Balls, check... vodka, check... I'M GOOD!!"
"I'm fine, (BARF)"
"Your killing them, I'm killing them, even F***ing doc is killing them... Takeo?
--Nikolai, CoD 5 Nazi Zombies
"Double tap, double tap, double tap, double tap Voot Beer, Voot Beer, Who doesnt like Voot Beer? Double tap Voot Beer!!!"
"Dempsy I hate you... I hate your ugly voice."
"LOOK IT'S THE MISSING LINK!!! AND HE'S HOLDING A MONKEY!!" Dr Richtofen when Dempsy picks up monkey bomb
--Dr Richtofen, CoD 5 Nazi Zombies
"I cant kiss you in front of everyone!" Blue Elite to Master Chief when you stare at him long enough
May not be a video game but this is from that movie from the sixties, The Ghost an Mr Chicken
"Your CFC and your OK, your CFC and your OK, your not CFC but your OK, your C... Wait... your not CFC, GET OUTTA HERE!!!" Cop
"ATTA BOY LARRY!" Random dude
I have a lot more but I cant remember some... lol