I remember several:
Cassidy: I wish I had a limit break. I'm gonna knock your teeth and use them as dice. I'm pound you into round ground. I'm gonna make into an undertaker's nightmare. Nothing wrong with you that a critical in the eyes won't cure.
Vic: Nobody's taking this place over!!
Sulik: we make da friend for Grampy Bone from you!
Marcus: Imagine this fist down your throat. One fist Two fist, red fist blue fist. CHRIS AVELLONE LOVES YOU! (epic).
Myron: I'm gonna rip your neck and shit down your...wait that's not right. I work harder and fight...umm, nevermind, I actually don't work that hard. We should go back to the entrance where the Kobolds are. I'd rather be a rear tactical observer. I haven't been in a fight since fifth grade. I saw De Niro do this on a movie once. Please die, please die, please die.
Goris: If there's part of you that doesn't hurt, its NEXT! Missile armed and homing (usually when he charges an enemy). I'm the one that put the death in Deathclaw.
Lenny: I'm gonna give you SUCH a pinch. And the crowd goes wild. Nobody messes with "crazy" Lenny.
Those are the ones that stand out in my memory.