I just started catching up on Californication because of the access on this site. It is a surprisingly good show! I wasn't really sure what to expect after all of the boob shots in the first show, but it actually has a really good story behind it. I think the characters draw you in (other than the secretary that so far seems a little off), but I'm only on episode 8 so far.
I would agree it is very addictive, my husband and I were just going to watch one episode last night and we watched like 5!