Laura Prepon's Donna Pinciotti was of of the most important characters in That 70's Show. She may not have been as popular as Forman, Kelso, or even Fez, but her character was the backbone to what ...

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.