Magic Kingdom - the Stitch Ride. Why is it there? Just knock it down - a block of concrete would provide more entertainment.
Epcot - the whole park sucks but I really really hate the living with the land thing. It's like a bad, poorly written, uninformative, unrepresentative geography lesson.
Animal Kingdom - It's Tough To Be A Bug. Overrated, cramped and just a horrible movie.
MGM Studios - Backlot Tour - it was outdated in 1997, and it hasn't changed since. Yes, we've all seen the ship from Flight of the Navigator...