That is, until the show's final season after Topher Grace and Ashton Kutcher left the series. That 70's Show took Donna and completely ruined her characters arc and the heart of the series.

Episode 7, "Christmas," sees another Christmas special, again supporting the idea that it is still 1978. While there is no specific New Year's episode in That '70s Show season 6, it's assumed that ...

Topher Grace and Laura Prepon reprise their "That '70s Show" roles as Eric Forman and Donna Pinciotti ... shows up in episode five and then the season one finale to take Leia back home when ...

Laura Prepon is an American actress. She first gained recognition playing Donna Pinciotti on That '70s Show from 1998 to 2006. Prepon is also known for her role on Orange Is the New Black.