Some great TV shows have made their way onto DVD this week including:  Seinfeld - The Complete Series - a sitcom that was consistently hilarious for its nine-year, 179-episode run; Heeere's Johnny - The Definitive DVD Collection from The Tonight Show starring Johnny Carson - massive dose of hilarity from one of the seminal figures in 20th century entertainment; Dr. Katz Professional Therapist - The Complete Series - a set of one of the funniest series Comedy Central's ever delivered; Other shows include:  Law and Order: Special Victims Unit - The Fourth Year, Family Affair - Season Four,  Martin: The Complete Third Season, The Batman - The Complete Fourth Season, Full House - The Complete Series Collection,and The Super Powers Team: Galactic Guardians.  Want more?  Check out all of the TV on DVD reviews in the DVDTalk database.