Tiffani-Amber Thiessen will reprise her role from Saturday-morning series “Saved by the Bell” on the prime time spinoff “Saved by the Bell: The College Years,” joining former series regulars Mario Lopez, Mark-Paul Gosselaar and Dustin Diamond on the new show. Separately, NBC announced that Gosselaar will host its new kidvid series “Brains and Brawn,” which premieres July 10 and also comes from NBC Prods.The Permanent Charities Committee and producer David Wolper will be honored tonight with the Los Angeles Film Teachers Assn. awards for humanitarian contribution. Dinah Shore, Mace Neufeld and others will be present at the event at the Sportsmen’s Lodge. Speakers will include Lynda Guber, Nancy Travis, Susan Dolgen and Wendy Goldberg. Warren Beatty, 1993 PCC campaign chairman, will accept the Jean Renoir Film Humanities award and Wolper will become the second recipient of the Responsibility in Television honor. Agency for the Performing Arts has promoted assistants Chris Coelen, Jonathan Rubinstein and Pamela Wagner to agents. Coelen, a former news producer, will start a TV news division, representing on-air talent, producers and documakers in Los Angeles, where Wagner also will be based. Rubinstein has relocated to New York to represent talent for features, TV and theater. C.C. Deville, former lead guitarist for Poison, has signed a recording contract with Hollywood Records. DeVille is preparing his solo debut album for release early next year.