SUED: Don Johnson, 51, by an unidentified woman, who accused the former "Nash Bridges" star of groping her in an upscale San Francisco sushi bar. In court papers (obtained by the San Francisco Chronicle), she claims that she thought he was going to give her a hug when, instead, he grabbed her private parts and said, "You like that, don't you?" and left for his table. Later, she says, he propositioned her. Johnson has vehemently denied the allegations through his publicist and lawyer . . . RE-NEGOTIATING: Freshly nominated "The West Wing" costars Allison Janney, John Spencer, Bradley Whitford and Richard Schiff are seeking a pay hike. The quartet met with producers on Thursday to discuss their contracts, series creator Aaron Sorkin confirmed. He declined to discuss details. Variety reports that they currently earn $30,000 per episode and are seeking a triple increase. Series stars Martin Sheen and Rob Lowe reputedly take home at least six figures per episode . . . STARRING: Former "Baywatch" babe and Playboy model Carmen Electra, 29, has finalized a two-year deal to star in her own show on the Las Vegas Strip, starting early next year, her publicist has confirmed. A producer for "Lumiere," at the Aladdin hotel-casino, in which Electra will star, said, "We needed someone who is both a superstar and a multifaceted performer to make it work."