Interested in the latest TV on DVD reviews? DVD Talk has you covered! This week's notable entries include: Defying Gravity: The Complete First Season - a startlingly produced, well-expressed piece of science-fiction; G.B.H. - quite hilarious and often thought-provoking, this British mini-series comes highly recommended; and Wartime Britain: Three Complete Dramas - a trio of excellent series that look at England during WWII: Housewife, 49, The Heat of the Day, and Island at War. Other shows recently reviewed include:  Gary Unmarried: The Complete First Season, Taggart - Set 2 and The Complete Inspector Lewis.  Want more?  Check out all of the TV on DVD reviews in the DVDTalk database.