Am ashamed to say have never seen Glee! Well, just bits and pieces. Seems very fun and energetic.
Agree about the Black-eyed Peas. A bit painful to watch. I can think of other acts like David Gilmour (of Pink Floyd), Eric Clapton, AC/DC, Bon Jovi, Billy Idol. You know, sort of big stadium acts. Loved Slash and think Guns and Roses would be cool but don't think they will reunite anytime soon.
Hope I haven't dated myself too much with my musical choices! Have you seen many of the halftime shows in last 10 years and if so what were some of your favorites?