speedrun of the old classic, 'Sonic Spinball'... a pin ball style game where sonic (obviously) is the ball.
Appart from the style of the game the aim/goals are pretty much the same as other sonic titles; work your way through booby trapped levels to face a boss at the end of each and ultimatly defeat Dr Eggman (or Dr Robotnik as he used to be known depending on where in the world you are!)

This is a Tool-Assisted speedrun using slow-down and save states. Played by Richard Hinteregger AKA 'Zero' and is the current tool assisted world record posted here on tas videos...

http://tasvideos.org/221M.html