Christopher Lloyd to Guest Star on ‘Roseanne’ as Roseanne Conner’s Potential Stepdad — Watch the Sneak Peek!

He's coming back to the future — as a guest star on Roseanne! Christopher Lloyd is set to appear in tonight's episode as Roseanne (played by Roseanne Barr)'s mother Beverly's boyfriend, Lou. The actor will allegedly only appear in this episode of the sitcom (although he's so beloved we could see him continuing his stint on the show).

In the sneak peek for the episode, we get to see Christopher with Beverly (played by Estelle Parson). If you can recall from the original series, Bev divorced Roseanne's dad, Al Harris (played by John Randolph), after she learned he had a mistress for 20 years. He later died, but before his death, we learned he was abusive during Roseanne's childhood.

Ever wonder if you're supposed to tip your driver? #Roseanne pic.twitter.com/z6t7g77g5O

— Roseanne on ABC (@RoseanneOnABC) May 1, 2018

In the funny clip, Bev introduces Lou to Roseanne and Jackie (played by Laurie Metcalf). "These are my daughters," she says to him. Lou then tries to be funny with his reply, "I would have mistaken them for your sisters." To no surprise, Jackie has a comical response herself. "Uncalled for Lou!" she exclaims.

The original Roseanne saw famed co-stars including George Clooney, Leonardo DiCaprio, Bruce Willis, Sharon Stone, Ellen DeGeneres, Debbie Reynolds, Tobey Maguire, and more. The reboot will also feature stars including Sandra Bernhard, Natalie West, James Pickens, Jr., and Adilah Barne.

In a previous interview, Roseanne Barr opened up about how George didn't want to appear on the revival. "Well, George Clooney didn’t want to come on — so that was a bummer, but he lives in Italy," the 65-year-old shared on The Howard Stern Show. "He’s said some really silly things about me, but I still love him."

Well, without George the reboot has already been renewed for a second season! "We're thrilled that America has welcomed the Conner family back into their homes," Channing Dungey, president, ABC Entertainment, said in a previous statement. "The show is as fresh and relevant today as it was when it left the air 21 years ago. We can't wait to see what the Roseanne team has in store for next year." We bet their ratings will go up even more with Christopher on the cast now!