Horizons
If not that, then Journey Into Imagination.
If not that, then the Jeremy Irons version of Spaceship Earth.
If not that, then World of Motion.
If not that, then Cranium Command (and the rest of Wonders of Life).
If not that, then The Timekeeper.
If not that, then The Enchanted Tiki Room.
If not that, then The Hunchback of Notre Dame.
If not that, then the Mickey Mouse Revue.
If not that, then the original Animation Tour.
If not that, then the original Backlot Tour.
If not that, then Legend of The Lion King.
If not that, then Tapestry of Nations.
If not that, then Sorcery in the Sky (nightly).
If not that, then Food Rocks!
If not that, then 20000 Leagues Under the Sea.
If not that, then The Skyway.
If not that, then If You Had Wings.
If not that, then the original O' Canada!
If not that, then Kitchen Kabaret.
If not that, then Communicore.
If not that, then Ice Station Cool.
If not that, then The Living Seas.
If not that, then Monster Sound Show.
But if I could have Horizons back, then that would definitely be it.