Okay then, I've got it working now - thanks for the help, Bisqwit! :)
I think I understand why he made those deliberate pauses in movement. It seems to me that in some parts of the game, it's considered an easy kill to hit a certain enemy as they're "powering up." Additionally, it looks like some levels depend on certain elements being "on screen" in order for the player to access them. Beyond that, there are a couple sloppy points, but apparently a good effort overall for a first attempt in my book. I will vote once I finish watching it. :)
EDIT: I've finished watching the video. I believe he makes the moves he does to avoid taking any hits, but I could be wrong. Neofix, we'd all appreciate a little clarification on that point! That being said, I'm loathe to recommend the production of ANY Genesis movie, but I think this one deserves it.