Wow, people in here are pretty idiotic.
Orange county is a fairly wonderful place. Make sure you go surfing in Huntington Beach. You can rent a surfboard/wet suit for something like $20 an hour. Less without the wet suit. The shut down all of main street on tuesdays for a street fair. Pretty amazing time.
Then there is disney land and Knotts Berry Farm. Check to see who is playing at the house of blues anaheim cause it's fun to wander around downtown disney and then go to a good show.
Laguna Beach if you talk to some locals has some really great spots to go cliff jumping into the ocean.
Check out favorite companies to see if they are having sample sales. Pretty much every skate/surf company is out of Costa Mesa/Huntington and going to their shops means cheaper prices. Hurley, Quicksilver, Armada, Oakley, Volcom, Vans... just to name a few.
Make sure to get a sandwich at The Hat.
Make sure to go to Wahoo's Fish Tacos.
You can check out an Angel's game pretty cheap. Usually under $10 for shitty seats.
Favorite American Beer... Firestone Double Barrel Ale. Should be able to find it in Orange County. It's from SLO, CA.