It was the Arctic Monkeys for me. First album brill, second OK, third complete dross.
I loved OK computer, and Creep is one of my fave songs ever.
I saw Radiohead about 5 years ago and they were a big disappointment, so haven't listened to anything since.
Thanks for the warning on the Monkeys. I like the first two albums a lot, even though you can have a little bit too much of the "She's getting dressed we're going to the club dancing drinking going home having sex" bit, but never liked the third.
If you haven't heard it, get Radiohead's "The Bends," which is nearly as good as OK Computer. The double-CD version is fantastic, since it has a whole bunch of outtakes that themselves are better than just about every other band's regular songs.
Still haven't seen them live, and not sure I will this time if they play the King of Limbs stuff.