Robin Hitchcock does a great version of Gigolo Aunt, and Bowie's See Emily Play is OK.
(Edit: oops, just remembered Gigolo Aunt is solo Syd)
I really hate the big Floyd albums, so I find things like Scissor Sisters' Bee-Gees-ish version of Comfortably Numb preferable too, solely because they piss all over the spirit of the original. Likewise the (more reverent, admittedly) Easy Star All Stars' 'Dub Side of the Moon' thing. Like, if I have to listen to music I never liked and have still heard many many times, I'd at least prefer a different take on it.
Actually, how about Easy Star All Stars' 'Radiodread'? From what I've read on here so far I can't imagine it getting much love... I don't think I've found a single post about any flavour of reggae beyond 3rd-wave ska... but I was pretty amazed that any of it worked. I thought Toots & The Maytalls doing a super old school ska version of Let Down was genius. Not sure how it makes any sense to sound so triumphant and joyful, given the subject matter, but fuck, I reckon it sounds great.
Plus the album is as packed with production / arrangement details as 'OK Computer', which I was never expecting.