At the Maker Faire this weekend, there were several 3D printing vendors on display. It's not quite mainstream yet. I think a killer app is yet to be seen. And when it comes, we'll all groan about how obvious it is.
This article out of
the Economist explains where digital biology (numbiology?) is in its development. Relatively early compared to 3D printing. But the pieces are there and life has been, and is being, created. Moore's law is being applied here with the cost of gene synthesis decreasing while the productivity increases.
They claim it will be at desktop level soon. This means the
polloi will son be able to create life in much the way that iPhone app development became an industry unto itself. The supporting articles are worth reading as well.
Synthetic biology: And man made life | The Economist