Going to meaningful work:

Buster’s on to something here. He’s articulating one of the qualities I find in the best developers: what they do has meaning and matters to their personality. They are working to make things that result in greater happiness for themselves and others. Their passion is manifest in the quality of their code.

You should also check out Buster’s personal site. He’s got a neat info-graphics, personal data-mining thing going on there.