I went to college with an autistic guy who loved to play video games.
He would occasionally blurt out things like "Whoo-hoo!" and "It's-a me, Mario!" during class, too.
--
http://img267.imageshack.us/img267/2369/mythbattlers.jpg
http://img.photobucket.com/albums/v516/Sensui22/1248835958206.png