Los Angeles in 2-3 days
If you only have a weekend in Los Angeles, spend at least one day at the beach.
Then devote the rest of your time to just one or two areas of this massive city.
Go sightseeing in Hollywood and get a star map for celebrity sightings in Beverly Hills, for example.
Or spend your day exploring Venice and Santa Monica and ride the Ferris wheel at Santa Monica Pier.
Los Angeles in one week
Spend a couple of days at different beaches, rollerblade down the boardwalk, or even try your hand at surfing.
Then visit Hollywood and Beverly Hills and go shopping on the Sunset Strip
Spend part of one day at the Getty Centre and part at the La Brea Tar Pits. Explore the ethnic neighbourhoods of Chinatown, Little Tokyo and El Pueblo de Los Angeles before checking out more of downtown.
Then devote most of a day to touring a television studio and watching a live taping.