27 celebrities you probably forgot guest-starred on 'That '70s Show'

Lindsay Lohan, Dwayne "The Rock" Johnson, and Betty White guest-starred on "That '70s Show."Andy Kropa/Invision/AP, Charles Sykes/Invision/AP, and Phil McCarten/Invision for the Television Academy/AP

• "That '70s Show" premiered on Fox in August 1998 and ended in May 2006 after eight seasons.
• The sitcom featured appearances from plenty of notable stars, like Lindsay Lohan, Dwayne "The Rock" Johnson, and Betty White.
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"That '70s Show" premiered on Fox in August 1998 and concluded in May 2006 after eight seasons. The hit sitcom put actors like Mila Kunis, Ashton Kutcher, and Topher Grace on the map, but it also featured fun appearances from already established stars.

Lindsay Lohan, Dwayne "The Rock" Johnson, Betty White, and Cole Sprouse are among some of the celebrities who popped up on the show.

Here are 27 people you probably forgot guest-starred on "That '70s Show."