My top one is Journey Into Imagination with Figment. Then comes in no special order Dumbo, It's A Small World, Winnie The Pooh, and The Barnstormer. Take in mind the last time I was at WDW I was 5 years old.
Gotta be Mission: Space. Not everyone likes it because of the health concerns (and because of it's predecessor's passing), but it's my favorite. The non-existant wait time makes it even better!
Definitely The Haunted Mansion. It just fits my personality. I love even waiting in line for it and the pre-boarding part. As for a show I love Mickey's Philharmagic because I love music.