“Ken sent me”
A game from the Worms franchise?
“How would you like to be the wholly-owned servant to an organic meatbag?”
Star Wars: Knights of the Old Republic
House of the Dead 2
Resident Evil
My contribution:
“Do I have time to take a nap before the fight?”
The reason we exist is because the jellyfish will it so. WHY ELSE?
Thank you, kind raccoon. Please tell me your name.
Nope.
Super Mario bros. 3
You find the strange woman oddly attractive. Then again, you find every woman attractive.
Leisure Suit Larry?
“Evil 'round every corner… Careful not to step in any”
Vampire : Bloodlines. Malkavians rule ! Another fantastic quote is when your ex-friend recognizes you. You can use Dementia with the line “I’m not me. I’m the pet turtle you flushed down the toilet when you were 5”, at which point said friend just loses it 
“I don’t know what you were expecting, but as a sword I’m pretty one-dimensional in what I want.”
Baldur’s Gate 2
Death Knight pissed3 from Warcraft 2?
Butt-kicking for justice!
Go for the eyes Boo, go for the eyes!
Yoshimo stands ready!
Baldur’s Gate 1
“In the beggining the earth was without form”
Yup.
“May the water you find in the desert not shine at you in the dark, wanderer.”
Still unanswered:
“There’s only one way to make this right.”
The original Civilisation.
Still unanswered: “Radiation? Heh, whatever.”