In an effort to keep up-to-date on the comings and going of SAVED BY THE BELL and BEVERLY HILLS 90210 alumni, theTVaddict.com is proud to report that Tiffani Theissen (formerly Tiffani Amber Theissen — I miss the ‘Amber’) has joined the cast of ABC’s drama WHAT ABOUT BRIAN. Theissen will play Natasha Dylan who — like every other Theissen character — is a sexy, manipulative and shrewd. Dylan becomes Dave’s (Rick Gomez) new boss at KC Gaming and enjoys playing mind games with Brian and the gang. Having never watched the show, I really have no idea what any of that means — but where Tiffani Theissen goes, this TV Addict follows. 