Very well done!
The use of sprites in this flash is top notch! The storyline is a bit confusing, but that will hopefully be cleared up when the next episodes are released. I do have one comment though. The first robot Sonic faced (the one with the spike ball) said "Sonic from Angel Island..." but I'm almost certain Sonic the Hedgehog and Miles "Tails" Prower are from a planet called Mobius and that Knuckles is from Angel Island (just wanted to clear that up).
Anyway, great job with this movie. Can't wait for the next ones...