Orlando's SeaWorld boasts two of the top five 'greatest' roller coasters

Rock 'n' Roller Coaster Starring Aerosmith at Disney's Hollywood Studios came in 10th place.

http://youtu.be/pXHE4wok8Pk

From Wikipedia:

Manta is a flying roller coaster, which simulates the sensation of flight. It is designed to resemble the way rays—mantas in particular—appear to fly through seawater. Guests are initially seated upright on the trains in one of eight rows that hold four passengers each, accommodating up to 32 riders. Manta operates with three trains. Before departure, mechanisms in the station raise the cars up to the track, such that the riders' spines are parallel to the track. Guests are secured in their seats using a locking lap bar, a vest-like harness, and flaps at the riders' ankles to hold their feet in place.