His first big break was "Bosom Buddies," where he was in drag half the time. In "Big," even though he was in the body of an adult, his ten year old self had sex with an adult.
When he got the mustache to play Walt Disney, he looked creepy to me:
and it got worse when he played Mr. Rogers
...and this one sent me over the edge:
That last one... the clock... gross.