What's interesting is that antidepressants such as Prozac have a few established, proven and well-documented side-effects, one of which is orgasm inhibition:

http://en.wikipedia.org/wiki/Ssri#Sexual_side_effects

So I'd imagine that the men who are prescribed antidepressants for things like premature ejaculation find that they very much do live up to (a different kind of) hype.