Television News Tiffani Thiessen joining the cast of ABC's 'What About Brian' drama 01/06/2007 U.S. actress Tiffani Thiessen, best known for "Beverly Hills, 90210" and "Saved by the Bell," will join the cast of the ABC drama "What About Brian." Read More RELATED NEWS Jimmy Fallon's 'The Tonight Show' dropping to only four nights a weekAshley Tisdale announces birth of her second childSelena Gomez is a billionaire TAGS: Dancing with the Stars Stacy Keibler Krista Allen Jessica Szohr Tiffani Thiessen Rachelle Lefevre Beverly Hills, 90210 What About Brian 90210 Saved by the Bell
