In a word? Unbelievable.
If you're a fan of Radiohead, Chemical Brothers, and other "brooding" type music such as Massive Attack and Tool, then get a copy. Great solo stuff from him. A lot of it sounds familiar yet fresh, but a bit experimental, and all at the same time.
Don't expect a straightforward rock album. Most of it is a combination of different instruments combined with drum machine beats and other electronica. The opening track "The Eraser" and "Black Swan" are some notable tracks. "And It Rained All Night" brings back memories of old school Chemical Brothers's experimental house, but with Thom Yorke's incredible vocals. Great great stuff.