Malibu fits your description, as does any city with the word "Beach" in it. (Other than Long Beach and Venice Beach. Ick.)
Hermosa Beach
Manhattan Beach
Redondo Beach
Topanga
With Topanga and Malibu, the Homeowner's Insurance is ass-raping high. Erthquakes, landslides, dust storms...
Hollywood Hills if you want to be near all the movie stars/action. South Hollywood if you like the gay/lesbian community. (Also cheaper to live there, and nicer)
Beverly Hills if you can afford it.
Enjoy.
