Oh a Disney subject ! Now that's interesting !
In the Disneyland park, these are the attraction I like the most:
-Pirates of the Caribbean: The coolest dark ride ever, I just love audio animatronics !
-Phantom Manor: There are 999 happy haunts there, but there's room for a thousand. Any volunteers ?
-Big Thunder Mountain: The first roller-coaster type ride I've ever rode, maybe you could like it Johnny, since I was like you before
-Space Mountain: if you feel brave
and these are the cool ones in Walt Disney Studios:
-Rock n' Roller Coaster: Toughest ride, even tougher than Space Mountain. Don't eat before going in there
-Armageddon: This is one I think you might like ! You are in a ship that gets too close to meteores. Very well done, exciting but not scary !
-Studio Tram Tour: that is very nice if you're interested in how they make movies
Don't miss the Main Street Electrical Parade if you like Disney characters. This parade takes place in the evening, in Disneyland.
After your day, go in Disney Village, right at the exit of the park. You've got tuns of good restaurants and boutiques over there. And as Patchou mentionned, there is this Buffalo Bill's Wild West Show there, which is just great ! A nice meal and a nice show in one !