I worked as a barista for a short time during school and had many friends who did the same, and while I wouldn't want to stay in that position forever it certainly served its purpose very well. I always received a little better than minimum wage (at 17, mind you!) and I hear these days it's about $5-7 above minimum, plus tips. Also, anyone who works 20hrs gets great health benefits, etc. A fantastic place to work if you're a student. My dad has also been a corporate manager for over 10 years and still enjoys it.

I work at the starbucks in Canada, and the compensation is almost $10 per hours.
I get as many hours as I want, and it's also very flexible at my store.
Frankly, I think starbucks have great pay-roll as a part time job

P.S. Don't forget the tips and 1.5~2x salary on holidays!!