Alo re Littlefinger: I actually enjoy him a lot. And I think he's one of the most interesting characters in that lot - also he has the best lines. But there's some stuff going down with him in book III/IV that has turned on the creepy radar for me. And I can't really be on team LF after that, even though I still more or less enjoy him. But in Got/Cok he's pretty much great. ;)