Elmofongo: Rotating the earth backwards to reverse time :P
I've read, since, that superman didn't make time go backward through some sort of bizarre momentum effect applied to the earth, but that he simply flew very fast (could have done it in a straight line too) and went back in time by going faster than light (some pseudo-einsteinian stuff), with the visual effect of earth rotating backwards.
That is, contrarily to what I had understood as a kid, he didn't make time go backwards by making the earth turn backwards, but the earth turned backwards because superman travelled back in time.
So there. For, hm, logic. Well, less devastating logic.
That said, yeah, superman is super ridiculously super all, and he super can super everything he super wants. Therefore the bad guys lose. The end.
Also, it is rumored that he depends on the sun for his super powers, which is not that much of a weakness appearently because he seems to function pretty well at night too if I'm not mistaken.