Tom Petty was fine. He sounded and played like Tom Petty. If you already didn't like his music, you weren't going to enjoy his show. I'd much rather see acts like Pettty, Prince, and Paul McCartney performing (ie. not lip-synching) than the aforementioned hip-hop/pop acts. I mean, I don't think the majority of the Super Bowl audience is really into Nelly or whatever. Also, I can't remember the specific performance, but I seem to remember MTV booking another act that did a bunch of inappropriate stuff during the Super Bowl (might have been the year after the Janet/Timberlake incident, I can't remember, though). Worst one in recent memory was probably the Rolling Stones, though. Bad mix coupled with a shaky performance ended up being just an embarrassment.