I saw Tinker, Tailor, Soldier, Spy and I was sort of surprised to find that I really really enjoyed it. It was really confusing at times, but it was well done and more of a low-key drama without all the overblown spy movie things like car chases or getting shot without realizing it.
So, it's Sirius Black, Sherlock Holmes, the Dream Lord from Doctor Who, King Edward, Lord Blackwood, and a bunch of other famous people doing serious spy stuff in the Seventies. And most of the main characters were gay, which added to the internal conflict drama.
And the blatant homoeroticism worked really well, despite it being much exaggerated from the novel. (I'm about halfway through the book and it's amazing too.)