That '70s Show is known for its iconic guest stars, and 10 of them stand out as the most memorable. From Alice Cooper as himself to Kevin McDonald as Pastor Dave, these guest spots added comedy and entertainment value to the show. Seth Green's role as Eric's nemesis, Dwayne Johnson's cameo as a wrestler, and Brooke Shields' portrayal of Jackie's mother were also highlights. Joseph Gordon-Levitt's appearance included a significant historical moment, while Mary Tyler Moore and Bruce Willis brought their comedic prowess to their respective roles. Lastly, Betty White's character upstaged the main cast with her biting humor and touching moments.