apparently i can do gollum too (i didn't know this until i was doing it and someone said something).
Kermit the frog.
my math teacher
random accents (English, Irish, sometimes Swedish, Minnesotan(sp?) New York(ish), deep south, etc.)
Simon Cowell...
i use to could do elmo.
um I can do a lot, especially if i am constantly hearing them...but if i don't hear them I loose them.
oh and my random voices
(some people have heard some of those impressions)
aswell, yoda, I can do.