I'm torn between "The two whats?" (utes - and not the line but the delivery) and "I can understand the hostility" as my favorites of his lines. Yeah, the "utes" line is classic.
Another of my favorites is when Vinny's girlfriend mentioned her biological clock ticking....Vinny goes on the long tirade and says, "not to mention your" (stomps foot on ground three times) "biological click ticking!!! Is there anything else we can pile on????" (pauses and looks up)......"is there anything else????"
And of course, the classic, "imagine you're a deer....you spot a little brook....you put your little deer lips up against the clear, cool water....you look up....BAM!!!!! A fu**ing bullet blows your head apart!!! Now I ask you, would you care what kind of pants the SOB who shot you was wearing????'
That's one of those movies I can watch again and again. I'm laughing right now, just thinking about the movie.