Sorry eytanz, but I'm going to have to blather on a little more here.
My list of the best things, in no real order again, would look more like:
Let Down
No Surprises
How To Disappear Completely
Pyramid Song
Everything In Its Right Place
Motion Picture Soundtrack
Idioteque
True Love Waits
Then there's a HUUUGE second tier of "amazing" songs, none of which are quite good enough to fit onto this elite tier I have. But I'd have to include all of you choices in that, and I have to agree that they are an album band more than a band with massive singles. Listening to OK Computer (or Kid A) all the way through makes me feel a lot differently about the songs than listening to them on their own does. It all links up to create an atmosphere, an emotional journey (cliche alert).