Grocery: bagger/cart pusher, Stocker, Dairy assistant manager (promotions at same job)
restaurant host
pizza delivery
Optician
Cellular sales - Cingular
Cellular sales - Nextel
Electrician

Paperboy (local paper)
Dishwasher (local restaurant)
Waiter (same local restaurant)
Stockboy (Wal-Mart)
Cashier (local grocery store)
Factoryworker (local factory)
Dial up technical support (local ISP)
Computer repair tech (local computer shop and a university)
Programmer (university, and engineering firm)
Educational Technologist (university)

Babysitter
Lawn Mower
Pizza Cook
Detasseler
Law Office Filer
Pepsi Delivery Boy
Gypsy Moth Trapper
Library Assistant
Paper Grader
Computer Installer
Design Engineer

a puppet
a pauper
a pirate
a poet
a pawn and a king

sorry couldn't resist bustin' out a little Old Blue Eyes.

Wow, I completely forgot I did that too when I was 12

starting at 12 because I don't have a real job history yet
-babysitting
-junk mail delivery (in my sister's name, because you have to be ~14 to officially have a job)
-cashier/supervisor (bookstore, summers: my best job ever, if I still lived in that city I'd still be working there)
-cafe work (terrible job that I took so I could say I had experience when I looked for a new one)
-kitchenhand (two months in London..fun!)
-bartender
-McDonalds (the cool manager who hired me had been transferred by the time I started work. It sucked.)
-kids soccer coach
-private tutor for highschool students
-university tutor

office assistant for a law firm (few months)
pizza pusher (delivery boy) (1 year)
warehouse worker (temp) for a wine company (packed bottles in boxes all darn day) (summer job)
proof operator (encoded checks into a machine for the bank) (1 year)
customer service / database administrator (what i'm doing now) (8 years)