There have only been two seasons so far, and yes, each episode is a half-hour (or 22 minutes online)--a perfect show to start catching up on. I began watching the first few episodes of season 1 during the writer's strike, and before I knew it I'd gone through every possible episode of both seasons and was eagerly awaiting the show's return in April. I can't get enough of it--Jane is really wonderful, as is the entire ensemble.
"If there is going to be a restoration fee, there should also be a Renaissance fee, a Middle Ages fee and a Dark Ages fee. Someone must have men in the back room making up names, euphemisms for profit."
(Emanuel Azenberg)