They're not a natural band for me to espouse. I'm a bit suspicious of the popularity, although the Beatles model says that in the ideal world the best band is also the most popular. But then there's the U2-ish, prog-rock sound and the keening mournfulness of Yorke's lead vocals, neither to my typical taste.
Still, in varying degrees I like most of their albums, previously OK Computer best of all, and to date I would call In Rainbows the best album of 2007.
UPDATE: I've also come to like the new Fiery Furnaces album, after initial skepticism. Eval of Jens Lekman, highly touted by pitchforkmedia.com and others, remains open.