Well, technically his last prediction about May 21st claimed that the world wouldn't END until 5 months later (October 21st). However, he did claim that the rapture (and people getting sucked into heaven) would occur at May 21st, which it didn't.
The sad part about his predictions is how he actually tries to say that the rapture DID happen last saturday, but in a "spiritual way". Yeah, I can't figure that one out either. My guess - he's a retard.