<Tr> <Td_colspan="2"> ← Previous Season 3 Next → Season 5 </Td> </Tr> <Tr> <Td_colspan="2"> List of That' 70s Show episodes </Td> </Tr> <P> The fourth season of That' 70s Show, an American television series, began September 25, 2001, and ended on May 21, 2002 . It aired on Fox . The region 1 DVD was released on May 9, 2006 . This season is set entirely in 1978 . </P> <Ul> <Li> Topher Grace as Eric Forman </Li> <Li> Mila Kunis as Jackie Burkhart </Li> <Li> Ashton Kutcher as Michael Kelso </Li> <Li> Danny Masterson as Steven Hyde </Li> <Li> Laura Prepon as Donna Pinciotti </Li> <Li> Wilmer Valderrama as Fez </Li> <Li> Debra Jo Rupp as Kitty Forman </Li> <Li> Kurtwood Smith as Red Forman </Li> <Li> Don Stark as Bob Pinciotti </Li> <Li> Tommy Chong as Leo </Li> </Ul>

That 70s show cast season 4 episode 4