Right.
Nirvana are not rubbish- they were so revolutionary when they came out and their songs are still brilliant. Lithium, You Know You're Right, The Man Who Sold The World (Bowie cover)........ they may not be your taste in music but surely Nirvana can't be classed alongside bands like Kaiser Chiefs as crap bands that are big.
I'd agree that U2 are overrated. Kaiser Chiefs and The Killers are alright but definitely not as good as they're made out to be in my opinion.
Pink Floyd are certainly not "rubbish"; sure, some of their abstract stuff is maybe a little pretentious but listen to "Wish You Were Here" if you're in doubt that they've made some phenomenal music.
2^1/2 : Kaiser Chiefs, as I've mentioned, are overrated in my opinion. However Franz Ferdinand are brilliant I think. Such catchy riffs and I love the way Alex Kapranos sings.
I'm glad nobody's mentioned Radiohead yet.
Razorlight are alright; catchy songs that are good to sing along to, however the lead singer is an arrogant git (didn't he say that he was the best songwriter in the world or something along those lines?).