I think the thing with Radiohead is you either get them or you don't, their first 2 albums were considered guitar based rock, almost in line with the current trend coming out of Seattle at the time. Then came OK Computer, which showed a change of direction with the inclusion of synths, keyboards and computer programming, which was a taster for the next couple of albums where they practically abandoned their guitars for a more experimental sound.
I'll admit, when I first listened to OK Computer, I wasn't keen at first because I loved the guitar work on The Bends and wanted more of the same, but over time I've grown to love the album and would easily place it in my Top 20 favourite albums of all time. As for Kid A and Amnesiac, I could happily pick a few tracks from each to make one decent album, there's a lot on both that I'm not too keen on and everything after that hasn't really grabbed my interest other than the odd song here and there.
I've only ever seen them live once, in Manchester in 2003 and they were nothing short of phenomenal, something which I couldn't say about Asian Dub Foundation who supported them (both me and my mate nodded off during their set

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I can't comment on last nights performance because I forgot they were on and haven't watched it yet, but to finish I'm throwing it out there that I'm looking forward to Thom Yorke doing the score for the Suspiria remake, even if my expectations for the film are really low already