I think Adam Sandler jumped the shark a while ago. Happy Gilmore was pretty good. And The Waterboy had its moments. But then it was like he started doing the same old thing in every movie. Punch Drunk Love was unwatchable.
Oddly, I felt that Punch Drunk Love wouldn’t have been a bad movie if they’d taken out the odd sex-line subplot. It just made a strange movie even more bizarre and painful.