I like the Conchords guys. I don't like Ten D. Spinal Tap worked as a movie, but I don't care about seeing them live, plus I hear their tour is just them doing accoustic stuff from all of Guests' movies. Sounds boring. GWAR? No. Manson? No. NIN might be fun for me. STP? No. Heard good and bad about the Beasties live. I'll give them the benefit of the doubt.
Blues Traveler could be fun and that fat guy seems to put alot of effort into his shows. Barenaked Ladies? No. Counting Crows? No. 7M3 could be ok if kept short. Blink 182? No. Sum 41? Who? The Offspring would be cool to see live. Flogging Molly is, again, the best show I've seen live.