There's been several rumors lately that the Micael Jackson film/attraction, Captain EO, that was at one time in all the Disney parks, may return for a limited run in Disneyland in 2010. There's also a thread here Captain EO returns that talks about it.
Would you be interested in seeing this again (or for the first time) in WDW/Epcot?
Personally, I think it would be neat for them to bring this back, if not but for a limited time.