Visible crew/equipment: In the futuristic sequence, several times you can see the edge of the lens. This is likely because the show was reframed in 16:9 but on a 4:3 screen in 1999, the edge would not be visible.
That '70s Show (1998)
1 visible crew/equipment mistake in Cat Fight Club
Starring: Mila Kunis, Ashton Kutcher, Topher Grace, Danny Masterson, Laura Prepon, Wilmer Valderrama
Punk Chick - S1-E22
Other mistake: Jackie and Kitty are baking a pie in the kitchen and Kelso walks in. Jackie and Kelso have an awkward encounter as if they are separated, but they got back together at prom.
Fez: Having sex with someone you work with is horrible. I don't know how Donny and Marie do it.
Trivia: All of this season's episodes are named after The Who songs.
More questions & answers from That '70s Show
Answer: It's Ashton Kutcher's dog.