Get ready to turn back the clock to a groovier era full of shag carpets, shaggy hair and casual shagging, when 'That ‘70s Show: Season Six' debuts on May 8 as a four-disc DVD collection from Fox Home Entertainment and Carsey-Werner.

Starring Ashton Kutcher (The Guardian, Guess Who), Topher Grace (Spider-Man 3, In Good Company), Wilmer Valderrama (Fast Food Nation, Party Monster), Laura Prepon (Come Early Morning, Slackers), Mila Kunis (Tony ‘n’ Tina’s Wedding, “Family Guy”), Danny Masterson (Capers, “The Dead Zone”), Debra Jo Rupp (Spymate, Big) and Kurtwood Smith (RoboCop, Staying Alive), this inventive and irreverent season showcases the grooviest all-star guest line-up yet including appearances from Shannon Elizabeth (American Pie), Seth Green (“Family Guy”), Alyson Hannigan (“How I Met Your Mother”), Brooke Shields (“Nip/Tuck”), Billy Dee Williams (Star Wars: Return Of The Jedi) and Luke Wilson (Old School).

'That ‘70s Show: Season Six' offers never-before-aired bonus materials including three commentaries by director David Trainer, episode promos and three featurettes – “A ‘70s Flashback: Debra Jo Rupp,” “A ‘70s Flashback: Kurtwood Smith” and “Six Minutes Of Season Six.”

So, if you would like to win one of these new DVD box-sets, and you think you know all there is to know about the show, just answer this easy question: In the first season we meet Donna's little sister, but will never hear or see her again. In a Halloween episode the narrator actually say "what happened to Donna's little sister?" What was the name of Donna's little sister?!

Send us your answers and if you're correct you'll be in the running to win one of these new DVD box-sets! Just send us an e:mail here before June 15th with your answer and the subject title CONTEST: THAT 70S SHOW 6 DVD to: exclusivemagazine@flash.net