At first, in this thread, i stated that the memory wipe was cool. But upon further thought, I agree that it was a bad move. They had built Lex up to be Superman's opposite, and he had all the right stuff to be Superman's nemesis in Smallville. I love the scene where clark said he'd be there to stop him every time. It looked like Lex was going to do everything he could to destroy Superman, without revealing who he really was. Then to just wipe that all way, was pointless and lame.