HTOTM: FUSION
Well, I've discovered that it's not just toribash. Other programs that use SDL don't work either.

Might be a driver problem, because I remember updating my graphics drivers recently and I don't think it installed properly.
Got it. Because I didn't fully uninstall the old drivers last time I tried it, it screwed some stuff up.

I wiped out the old ATI software and got the newest stuff, and the problem is fully fixed.