When people think of California, they usually think of Los Angeles. This seems natural since the movie industry is based there and its images such as the Mann Chinese Theater and the Hollywood sign.
LA also has beautiful beaches and the funky side show that is Venice Beach about any time of day.
Even the streets are famous. On Rodeo Drive there is the Beverley Wilshire where Pretty Woman took place and the Whiskey on Sunset Strip where about everything has happened.
I can see why people love LA.
Update: I haven't been back to LA since that trip in 2003 but I've been to lots of other places in California since then. See my comment below for links ot other photos.