Well, Chris Rock had far too much of an influence on my idea of the word "job". Cutting out all of the humor, a job is something you get through for money and lines on your resume. A career is something you pursue to make your dreams a reality.
With that said, I consider a good job to be a job that is easy to get through. If nothing in it drives you crazy, or if the perks easily make up for it, then I consider it a good job. I work for a law company. I have no interest in law, but my co-workers are nice, the clients are friendly, and I'm given loads of flexibility schedule-wise. I don't look forward to it every morning, because law stuff bores me, but I don't dread it either, since I know the environment is friendly. Therefore, I consider it to be a good job. Not a dream job or a career, but a good job nonetheless.
There are other factors, like pay and benefits, but I'm pretty stable financially, so the low pay doesn't bother me much. I guess that also means that a good job depends on what you're taking the job for.