Audio problem: When Vinny questions Lisa about the photograph of the tire marks, the soundtrack has been changed to the opposite of what she actually says. When her lips say "left" we hear "right" and when she says "right" we hear "left".
Audio problem: After Vinny questions the old lady about her glasses, he walks back to the desk and high fives his fiance. Their hands don't touch but still produce a slap.
Chosen answer: He never says that it was "his" idea. The actual quote from the movie is that on "a" hunch he looked it up. From the way it is worded in the movie, it appears he said it this way in order to appear impartial in bringing any new evidence to the court's attention, not necessarily just information that would benefit the defendant's case.
Jazetopher