I've used it in the past, but when they finally killed off the 1.0 builders (?) my company went to an "internally" hosted Jenkins[1] server and I haven't played with any of the 2.0 stuff. Have you? How do you find working with it?

[1] I did also ask about selfhosted stuff, but I'm not willing to host Jenkins for myself. I've heard nothing but complaints about managing a Jenkins install. It's been fine as a user (if a bit confusing), but I really don't want to admin it.