Apparantly, http://www.gameranx.com/features/id/3496/article/skyrim-perks-guide/. I haven't seen this before at least.
I'm a bit disappointed though, so many of them are just statistic related. I'd like even more things that affect gameplay, like decapitation, never set off pressure plates and so on...



though... It's not like the content is gonna surprise you when you click the link