I mentioned this a while back buried in a longer post, but it deserves its own spotlight for sure:
Dirk Gently's Holistic Detective Agency
It's on Hulu (from BBC America), and there are only two seasons, but it is insane and a blast to put it lightly. If you like shows that make you say "WTF?" you will enjoy the hell out of it. Based on the novel by Douglas Adams of Hitchhiker's Guide to the Galaxy fame. 85% on Rotten Tomatoes.
It stars Elijah Wood, and so I will dilute said spotlight by mentioning another great show he is in that I notice no one has mentioned and is more of a sitcom: Wilfred, also on Hulu (from FX). To everyone else, his neighbor's dog is a dog, but to him, Wilfred is a sarcastic Australian guy in a cheap dog costume. Hilarity ensues.
Huh, how about that, both shows revolve around a dog...