Man, not that I would bring them back, but some of the things I miss....
The Old Illuminations Show
Horrizons
Original Journey Into Imagination
Captain EO
World Of Motion
Magic Journeys
Communicore (nothing great about it, but still a classic)
I would love to see LAerphonic Fantasy again
Take Flight
Mission To Mars
The Walt Disney Story
20,000 Leagues
The Old Hall Of Presidents with Loncol's really cool speech
Man, I could go on and on....