I watched "My Super Ex-Girlfriend" yesterday. How funny would it have been if it had involved a psychotic and jealous super-hero who was obsessed with a girlfriend who spurned him? I know! About as funy as this sorry tale of a psychotic and jealous super-heroine whop was obsessed with a boyfriend who spurned her. Which is to say, not at all. I knew better. I just didn't believe that a movie could be this bad. But I watched it anyway. And I kept watching it even as I felt the slime coating my body. I kept waiting for an eleventh-hour O. Henry twist ending that would redeem the entire film. Instead, there was a hackneyed and improbable ending that left m wondering why I spent forty-three hours--at least it seemed that long--watching this trite bit of drivel!