Saved By the Bell‘s Tiffani Thiessen to Star in New Cooking Show br She'll serve celebrity friends, including Slater and Jessie br br It looks like Jimmy Fallon isn’t the only one reuniting the kids from Bayside High. br br Saved By the Bell‘s Tiffani Thiessen is getting her own cooking show, called “Dinner at Tiffani’s,” where she prepares and serves dinner for her celebrity friends, including some of the cast members from the 90’s teen sitcom. br Tiffani Thiessen is an American actress. She played Kelly Kapowski on Saved by the Bell and Valerie Malone on Beverly Hills, 90210.