<P> That' 70s Show is an American television period sitcom that originally aired on Fox from August 23, 1998 to May 18, 2006 . The series focused on the lives of a group of six teenage friends living in fictional Point Place, Wisconsin from May 17, 1976 to December 31, 1979 . </P> <P> The main teenage cast members were Topher Grace, Mila Kunis, Ashton Kutcher, Danny Masterson, Laura Prepon and Wilmer Valderrama . The main adult cast members were Debra Jo Rupp, Kurtwood Smith, Don Stark, Tommy Chong and Tanya Roberts . </P> <Ul> <Li> Topher Grace as Eric Forman (seasons 1--7; uncredited special guest season 8): Eric is a nice guy, geeky, physically slight and somewhat clumsy . He is a smart - aleck with a fast wit and a deadpan sense of humor . He convinces his parents to let his best friend Steven Hyde move in with them, making Hyde like a brother . His father, Red, is always hard on him . For seven seasons Eric is in a relationship with his longtime love and neighbor Donna Pinciotti . He decides to become a teacher after high school and he leaves the series at the end of the seventh season to teach in Africa . Although mentioned in every episode, he does not appear during the final season until the end of the series finale . </Li> <Li> Mila Kunis as Jackie Burkhart: The youngest member of the group, Jackie starts the series as the pretty, spoiled rich, selfish, often times annoying immature girl . She likes to give thoughtless and superficial advice, which occasionally turns out to be correct . As the series progresses she becomes more genuine, after her father, a crooked politician, goes to jail and her fortunes take a reversal . Partly as a result of these changes, Donna and she become better friends . By the end of the series, Jackie had dated three of the four males of the group: Kelso, Hyde and Fez . </Li> <Li> Ashton Kutcher as Michael Kelso (seasons 1--7; special guest season 8): The dumb pretty boy of the group wants to coast through life on his good looks . Often referred to as "The King" in many episodes, he spends the first half of the series in a relationship with the equally vapid Jackie, but their relationship comes to an end when Laurie (Eric's older sister) reveals their affairs to Jackie . He fathers a baby girl named Betsy from a librarian named Brooke during the seventh season . He becomes a police officer but gets kicked off the force because he does just about everything wrong . He gets a job as a security guard at a Playboy Club in Chicago and leaves the series during the eighth and final season . Kelso, along with Eric, returns for the series finale . </Li> <Li> Danny Masterson as Steven Hyde: Eric's best friend and the anti-establishment member of the group . By the end of season one, the Formans allow Hyde to move in after he was abandoned by his mother, making him a foster brother to Eric . Hyde has a witty, blunt and sarcastic sense of humor and a rebellious personality . He is also smart and the other group members often ask for his advice . Although Hyde dates Jackie for three seasons, in the final season he marries an exotic dancer named Samantha . Hyde later discovers Samantha was married to another man when she married him . As Donna points out in "My Fairy King", that means Hyde and Samantha are not legally married . In the seventh season, Hyde meets his biological father (William Barnett, played by Tim Reid), a wealthy black businessman (making Hyde, who was presumed white, biracial). Barnett, who owns a chain of record stores, makes Hyde first an office worker, then a manager and later the owner of the Point Place record store . He also previously worked for Leo in a Photo Hut earlier in the series . </Li> <Li> Laura Prepon as Donna Pinciotti: Eric's longtime girlfriend (and briefly fiancée). Donna is tall, intelligent, good - looking . Although she does not agree with what Jackie represents in the beginning of the series, they become friends . Donna is in a relationship with Eric for seven seasons (despite their break - up during season 4). She has brief romances with Casey, Michael's brother and Randy during the final season and quickly ends it . She rekindles her relationship with Eric at the end of the show's finale . </Li> <Li> Wilmer Valderrama as Fez: The horny foreign exchange student of the group whose hormones are usually out of control . His country of origin is never named . He enjoys eating candy, drinking beer and looking at pornography . He constantly flirts with Jackie and Donna and often makes romantic advances toward them . Initially, he has trouble getting attention from girls, but during the eighth season he becomes a ladies' man . He is in love with Jackie throughout the series but his love is not reciprocated until the eighth season when they become a couple . </Li> <Li> Josh Meyers as Randy Pearson (season 8): Hyde's employee at the record store . He is introduced in the final season . Randy appears laid back, gentle, polite and a ladies' man, although many of his flaws surface later, encompassing parts of the departed Kelso and Eric's personalities and other attributes . Tall (like Kelso), he tends to spout witty one - liners (like Eric), and makes silly voices . He forms a friendship with Red after showing Red how good he is at fixing things . While Hyde, Jackie, Donna and Kelso embrace him as a new member of their group, Fez initially does not, but soon warms up to him . Randy dates Donna for the majority of season eight, but she later breaks up with him . The two end on good terms and remain friends . He makes a brief appearance in the series finale . </Li> </Ul> <Li> Topher Grace as Eric Forman (seasons 1--7; uncredited special guest season 8): Eric is a nice guy, geeky, physically slight and somewhat clumsy . He is a smart - aleck with a fast wit and a deadpan sense of humor . He convinces his parents to let his best friend Steven Hyde move in with them, making Hyde like a brother . His father, Red, is always hard on him . For seven seasons Eric is in a relationship with his longtime love and neighbor Donna Pinciotti . He decides to become a teacher after high school and he leaves the series at the end of the seventh season to teach in Africa . Although mentioned in every episode, he does not appear during the final season until the end of the series finale . </Li>

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