[EricVanWyk]

I've had great luck working with Diversified Systems - they did the boards for FIRST this year, and I use them a lot for my day job. They are of the "we'll do it right, period" variety.

If you want it cheaply done and don't care that it doesn't work, 4pcb.com works. Of the 30ish board designs I've sent through them, only 2 or 3 boards had manufacturing defects. Their online DRC checker works reasonably well, but it is still a small gamble.