The Simpsons Ride is a motion base show in Springfield USA at Universal Studios Hollywood. While it's not a "must do," it is also recommended. The minimum height to ride is 40 inches.
The small but entertaining queue room features some of the Simpsons characters going about their crazy buisness which certainly is very entertaining. Once inside the ride, you prepare to fall off of a roller coaster and then drop into different rides at Krustyland which seem mysteriously similar to Disney rides!