Some great TV shows have made their way onto DVD this week including:  Dirt - The Complete First Season - one of the unsung gems of that season, this show is a terrifically entertaining, pulpy, melodramatic look at the world of celebrities and tabloid stalkers; Teen Titans - The Complete Fourth Season - With the return of the Titan's greatest foe, a season long mystery involving one of the team's members, and an exciting three episode finale, this season of is not to be missed; Grafters - The Complete Second Season - a delightful mix of laid-back Northern England charm coupled with some surprisingly deft romantic comedy plotting; Other shows include:  The O.C. - The Complete Series Collection, The Mod Squad - Season 1, Volume 1, Big Love: The Complete Second Season, Gene Simmons Family Jewels - Complete Season Two, and Mission: Impossible - The Third TV Season .  Want more?  Check out all of the TV on DVD reviews in the DVDTalk database.