Eric's attractive cousin, Penny (Brittany Daniel), comes for visit and she reveals something to him that may serve to his pleasure. Kitty wants a pet, but Red buys her an animal she least expects, and Donna and Jackie try ways to get the guys' attention back towards them instead of Penny.
- Topher Grace as Eric Forman
- Mila Kunis as Jackie Burkhart
- Ashton Kutcher as Michael Kelso
- Danny Masterson as Steven Hyde
- Laura Prepon as Donna Pinciotti
- Wilmer Valderrama as Fez
- Debra Jo Rupp as Kitty Forman
- Kurtwood Smith as Red Forman
- Don Stark as Bob Pinciotti
- Brittany Daniel as Penny Sigurdson
- Since Paula doesn't have a husband or kids, it is presumed that there is a third Sigurdson sister, as Kitty says of Penny 'I watched her mom give birth to her', or a Brother as Penny has Kitty's maiden name.
- Penny is never mentioned or seen again on the show, nor are her parents.
- Brittany Daniel would go on to play Sophia in the failed spin-off That '80s Show.