'That '90s Show': Debra Jo Rupp and Kurtwood Smith on Seeing Ashton & Mila as Real-Life Couple

Debra Jo Rupp and Kurtwood Smith chat with ET at the premiere of 'That '90s Show,' out Jan. 19 on Netflix. The 'That '70s Show' alums detail what it's like coming back for the reboot 16 years later. Plus, they open up about watching Ashton Kutcher and Mila Kunis become a real-life couple. Debra also shares how Mila initially had trouble stepping back into character as Jackie, while Kurtwood says filming a scene with Wilmer Valderrama was one of his favorites.