There are many rides we enjoy doing more than once each trip (Big Thunder, Buzz, Pirates, Tower of Terror, Everest to name a few). Often times we will do them back to back at rope drop or park close. However, it seems like all rides, except one, get stale after the 4th or 5th time, even if spread out over a week.
The one ride that doesn't ever get old? The PeopleMover. I could easily do that twice a day, every day, I'm in Magic Kingdom.