That Jenna Jameson game?

Sorry it took me so long to get back Drlstvaan, but the quote is from Gran Theaft Auto: Vice City. An elderly pedestrian yelled it at me after I bumped into him while running down the street. Cracked me up the first (only) time I heard it, and it still gives me a chuckle every time I think about it. :)

Indeed, good thing you got it rolling again with a more guessable one.
Hmmm, I don't know GTA, but it is possible it's present there as well. I took it from Lionheart: Legacy of the crusader, where Signor Leo says it. (And I'm not certain wether the devs at BI intended it to be such a hybrid of Italian and Spanish. And it's a faulty sentence even so... there's an unneeded article.)

...er...i'm all mixed up here.
Wasn't rayven998 talking about his "Somebody should hit you in the face with a brick" quote ?

Well I think that, though it may be featured in Planescape, we should feature ur good old bud Descartes
Cogito ergo sum

Correct, your turn.

I thougth it was a little odd that a quote from Signor Leo had find its way into GTA:VC ;)

"I orchestrated a war to slaughter thousands.I have felt the cold embrace of death. I have witnessed the horrors of the abyss. But you, ... you scare me.
(left the name out on purpose :-D)

Actually, I take that back - I think it was changed in the J2E fan retranslation, not the SquareSoft rerelease.
Apparently, J2E saw fit to replace one of the strangest and most memorable quotes in games history (even if it was just badly translated, which is possible, though the word does make sense in context) with "You damn bard!"

"I orchestrated a war to slaughter thousands. I have felt the cold embrace of death. I have witnessed the horrors of the Abyss. But you, Viconia... you scare me."
That would be Sarevok from Baldur's Gate 2: Throne of Bhaal, yes?

It's been 18 hours. I'm going to assume that Alpha Monkey is correct, and then steal his turn.
"To see a Keeper is not an easy thing, especially one who does not wish to be seen."

Sounds like Babylon 5 but without a game for it (at least an official one), it seems an unlikely guess

Awwww, but I wanted my turn. :(
(Chuckle.)
And while that does almost sound like something that would be said about a Vorlon, I'm guessing that's a Mass Effect quote. It's a reference to the Keepers that maintain the Citadel, I'm thinking.

Wrong and wrong. Funny, I thought this would be an easy one...
EDIT: Upon inspection, I seem to have miswritten the quote. My edited post contains the real text of the original dialogue.