Great suggestions, but a lot of them don't really apply due to the economic conditions we face here in SoCal.
Jaykrue's suggestion of being an entreprenuer would be fantastic in an ideal world, but a 17 year old setting up your own RE development and property management is highly unrealistic, particularly here in Cali where the median shoebox sells for well over 500K in any remotely decent area. Plus with lending tightened up, good luck getting any sort of loan without a minimum of 30% down for income property...for a 17 year old who sounds like he is just ready for the most basic entry level position? Not likely. But I do agree with your comments Jaykrue - finding a niche or creating something, developing it, and exploiting it are the fast track to wealth. Of course, it's easier said than done.
As for waiting tables, he'd never land a position as a waiter at any good restaurant, too many actor/writer/director wannabes filling those positions. Most menial/manual or as we say out here, "Manuel" labor gigs are 100% Hispanic/illegal alien filled. Forget landscaping, construction, pool cleaning, dishwashing/busboy, house cleaning, etc. Honestly, the malls or other retail/fast food may be, sadly, your best bet OP.
I would recommend trying to be a private tutor in certain subjects if you're good at them. You can usually advertise or find people that need tutoring via your high school. Life guard is a good position at neighborhood pools. Or getting a job at a reputable supermarket, (BETTER YET, A COSTCO!!!) as mentioned by a couple. Very good pay for entry level work, usually benefits, flexible hours. Hell if I was your age, I'd go to th Costco in Burbank and apply there to collect the shopping carts. Or one of the Ralphs, Vons, etc. in Glendale or whereever is close to you. Or a Trader Joes!
Without connections or a solid post high school education it would be very difficult to get much else. Though as stated previously, if you know computers, programming, etc. such work is always in demand. You can check monster, hotjobs, dice, careerbuilder, etc.