ET Universal Studios Florida

Each individual seat is a bicycle, whose handles come down as the lap bar. The bike in the middle of the front row contains E.T. The vehicles travel past NASA and police officials who give chase and try to arrest the riders. As they are about to be caught, a police car appears out of nowhere and just as they are about to hit it, the bicycles begin to fly over the city and then into outer space. From on their bikes, they can see the miniature city below, including real moving cars and even a football stadium. The bike is then transported to a kind of portal area with flashing lights which, when finally turned around, arrives at the Green Planet. Then guests encounter Botanicus who urges the visitors to save E.T.’s friends. E.T.’s healing touch travels through the planet, reviving his friends and beginning a celebration with baby E.T.s. This lasts for about 3 minutes, and is a huge contrast to the beginning; the beginning was dark and scary, and this part of the ride is light and colorful, with spurting water and singing. At the end, guests pass an animatronic E.T. who thanks them all by the name they gave to the travel agents/Spielberg’s Assistants.

See Wikipededia for full ride description

Of course there are more attractions like Shrek and The Hulk Roller Coaster anode more but those above are the best of the Sci Fi experience rides in my opinion.