Highly recommended. Of the trivia podcasts I subscribe to I believe Trivial Warfare's game has the best format. Also very cool are their annual "Trivialympics" episodes where hosts from different trivia podcasts are brought in to compete against one another and host a round using their respective game's rules.
Good trivia and discussion... can learn from the discussion as well as the questions. The host is annoying, and if he misses a question he often attacks it. But it's kind of a "godfather" of the trivia podcasting community.