I may be in the minority here but my 2 all-time favorites are not exactly "rides" :
1. Swiss Family Robinson Tree House - I could just spend HOURS walking through that baby.
2. Carousel of Progress - My ultimate Disney dream is a backstage tour of the Carousel including meeting (and touching) the family. "It's a great big beautiful tomorrow, la la la".
I also love the boat ride through the veggie/fruit gardens in the Land section of Epcot - riding through there I can alsmost hear the veggies singing to me, "Listen to the land, listen to the land, la la la". If you listen closely, you can hear the veggies and fruits actually growing.
I also LOVE the Hall of Presidents - except the boring movie that is played in the begining. The animatronic Presidents totally freak me out - I would love a backstage tour of them also (with touching).
My favorite ride that is no longer there was more of am attraction- Alien Encounter. Talk about a freak out! If I did not know better, I'd say there was really an alien in there with me once the lights went out! I KNOW something odd groped me more than once in that "encounter".

Awesome!