An American Werewolf In London - 1981
possibly my favorite horror flick ever (OK...after 28 days)
transformation scene - truly amazing considering in 81 there was no CGI, no fancy tricks, they actually made a face plumping werewolf doll thing for this scene. if you've never seen this movie, you should!
embedding disabled....great scene though
http://youtu.be/n9QPouW-XZ4
a naked American man stole my balloons
(yeah I don't know why I put this in here...it just always cracked me up - note the signature)