Opening credits[ edit ] Opening credits for seasons 1—7 showed members of the cast driving in Eric's car singing the theme song together. The eighth season was announced as the final season of the show on January 17, ,  and "That '70s Finale" was filmed a month later on February 17, , first airing on May 18, Smith looks at the camera frowning and rolls his eyes. The series also highlighted developments in the entertainment industry, including the television remote "the clicker" , reruns , VCR , and cable TV ; the video games Pong and Space Invaders ; the cassette tape and Disco ; MAD magazine ; and Eric's obsession with Star Wars. The stupid helmet[ edit ] The stupid helmet refers to a replica of a Green Bay Packers helmet that a character is forced to wear after having done or said something deemed stupid by the rest of the gang. Donna's hair color, Leo continuing as a series regular and the insertion of Randy. November Learn how and when to remove this template message The show addressed social issues of the s such as sexism , sexual attitudes, generational conflict, the economic hardships of the s recession , mistrust of the American government by blue-collar workers , and underage drinking , including teenage drug use. As the series progressed, the circle became one of the series' recurring features. Farrah Fawcett saying "Yeah! The circle[ edit ] The circle illustrated the teens' marijuana use, usually in Eric's basement. Although the conversations appear to mirror each other, notable differences often occur. The shift to during the last half of the first season also allowed the inclusion of the first Star Wars movie, which premiered in May So, yeah, elder sex is real. November Learn how and when to remove this template message The creators had wanted the show to have a s "feel" from the beginning, so opted to set the series later in the decade, when trends and political ideologies had become firmly established and disseminated. In the th episode, " That '70s Musical ", all singing scenes were Fez's dream sequences.