Everything In Its Right Place is not only one of the best album openers, it's one of the best songs of all time.
The rest of the album? Well, I certainly was blown away when I first heard it. In fact, THIS is what introduced me to Radiohead and I simply cannot get over this album. For as depressing the overall experience may be, it manages to capture you into its digital soundscape. Up to that point, I hadn't heard anything like it.
I don't know how many times I've listened to this god damn thing, but it really resonates with me. I generally hate to toss the word "masterpiece" around since music is very subjective, so all I'm going to say is this shit's GOOD. It was my fav Radiohead album for quite a while, until I focused my attention on In Rainbows.