I think the Chemical Brothers are playing with The Faint, but Underworld isn't involved - just a cheaper ticket. Actually, since I did the exchange at the box office, I didn't have to pay any fees making the $50/ticket cost of the combo deal cheaper than the $52 I paid just for the Underworld ticket, which had like $18 of various fees added to it. Practically a "Buy Underworld, get Chemical Brothers and The Faint for free" deal. Suddenly I like LiveNation
Course, after a show like that, I like Everything.