I've only listened so far to the 1 hr bandcamp link on the guardian article about this, but there are a few bits in there for an old fan to pay close attention to and smile about.
Like someone said earlier, some of the most interesting stuff is how utterly pedestrian some sections were before rewriting. The synth on the end of this 'full band version' of True Love Waits is the sort of lazily unchanging and badly mixed stuff I'd come up with, so that's quite cheering. But then I was never a massive fan of any version of that song, anyway.
Some of my favourite Radiohead songs are the b-sides to OKC, so if I can find where it is, I'd love to hear what is apparently a great version of A Reminder. Hopefully there's some Lull and Melatonin-related stuff in there as well.