A Sonic video without Sonic! Instead, Knuckles takes the spotlight and collects all the Chaos (and Super) Emeralds.

Though, since the latter set of Emeralds isn't used for anything meaningful at all, the author has also provided a version that skips all the Super Emeralds and their respective bonus stages, which is about 9 minutes shorter. The movie files for this and other bonuses can be obtained from the author's comments.