Finally got around to reading it -- thousand-page novels always look daunting -- and was utterly delighted. It's up there with the very best fantasy novels I've ever read.
Bonus link: Crooked Timber "seminar", including a long response by the author.
Every episode they read 4 pages of "Lord Foul's Bane", analyse it (with guest experts!), then re-enact it. Brilliant.