McDonald's.
I know what you're thinking, McDonald's is a drop kick job for 15 year olds. But trust me, it is not as bad as you think! From what i've heard, it's the best 'fast food' type job. The pay isn't too bad either, it's above minimum wage. I get just over $9, and i'm a 16 year old trainee. After I finish my training it goes up to $10.50 per hour. And it goes up by $2 every time you have a birthday.
What i'm planning to do is work here for a year or so, quit before my HSC, then get a 'better' job (most likely retail) after my HSC has finished.