I've been waiting years for this thread to come up!
I have a few (Matty, Rafael, Jimmy), but none I really care for except one.
My favorite: Sid
Flashback to high school 8th grade. I was at my third or so winter percussion practice.
My section leader suddenly exclaimed she knew who I look like: that character from Toy Story who blew up toys and stuff.
Everyone looked and said "yeah, you do!" .. and the name stuck. I was a spitting image of him at 13 years old, braces and all, and even now the resemblance is uncanny. I still get called that by most of my high school friends.