Goodness, I've been stuck/stalled on so many rides, but here are my favorites.
Spaceship Earth: Numerous times at the moon scene. Have some beautiful pictures.
Told my friends I was in space. ;0
Spaceship Earth II: Numerous times going backwards. I find that interesting. I used to be terrifed of going backwards, but now I find myself praying for it to stall, gives me a good rest. I enjoy it going backwards, and when it stalls, I don't know, I guess because I'm young I find i comfortable.
Kiliminjaro Safaris: More of a stall. Giant Rhino was blocking the jungle car. Got some good pictures, looked as if we were right on top of the Rhino!
Jungle Cruise: My friend and I were stalled in the cave, and the cruise guy kept asking "Why'd it have to be snakes?" and "Lion and tigers and bears, oh my!" Poor guy, didn't knowany good jokes he hadn't already said to stall time. Found outwe had stopped because the boat in front of us was pretty close, an odd occasion.
Test Track: Just as you're going past the brake test and up the first hill. We paused halfway down. I've never been stuck on the curves, but I've always thought it would be an exciting experience.
My least favorite is Splash Mountain, at the top of the mountain, pausing, sitting, anticipating. Eek!