The USC band wears sunglasses and they performed with Fleetwood Mac. They're my favorite band. They must travel to every game, just about - and they tend to be more noticeable than the home band.
I agree that the A&M band is pretty good, but I have to rate the Longhorns above A&M. Several years ago they (Texas) came up for a CU game and then performed at a Broncos halftime the next day at Invesco. They are amazing - of course some of that is due simply to their numbers - there has to be 300 of them.