Wow this threar really made me think. WDW has really changed since I was going as a kid (and I'm just 30).
My lost favorites:
1. Horizons -- loved picking the end and the "underwater" scenes
2. World of Motion - corny but good
3. The original Journey into Imagination
4. If I had Wings
5. Mr. Toad's
6. ALL of River Country -- nice somewhat quiet place to swim and have fun.
I never got a chance to ride 20K--it was always broken when we visited.
My lost favorites:
1. Horizons -- loved picking the end and the "underwater" scenes
2. World of Motion - corny but good
3. The original Journey into Imagination
4. If I had Wings
5. Mr. Toad's
6. ALL of River Country -- nice somewhat quiet place to swim and have fun.
I never got a chance to ride 20K--it was always broken when we visited.


I also miss the little theater on Main Street that played black and white Mickey cartoons.
I miss World of Motion too. 

Now I regret not going on it!
C'mon, admit it: The hair and the voices! Yikes!