I suppose, if you want to get all technical about it, my name is Matthew.. but I can only think of two people who call me that...(No, not my parents. >.<)
Most people just call me Matt... or Little Matt....*sigh*
And I'll call you ET!
I go by Sam, my real name is Steven, and I got Sam from my initials, but I'm not naming them here. I never really liked the name Steven.
Elias. It's annoying how many people mispronounce it. It doesn't even lend itself to a nickname, so I just get called Elias. It's not a bad name, I just wish people could pronounce it.