Here's one by a newer band I usually respect but left me scratching my head after playing it a couple of times.
Radiohead - Hail to the Thief
I played that one three times and it never grew on me at all...
Also I agree with Groovy I really liked Tormato by Yes, as I have said before Chris Squire's bass playing on that album makes it worthwhile.(He is one of the best rock bassists ever in my view.)