Edit: Wired has an article about it this month. In fact, I ought to pick up a copy.
They printed some stuff while I was there. When you consider each layer is about the thickness of a human hair it wasn't all that slow building up the layers. On the other hand, if you wanted to make something complex that filled the cubic space available it would probably take all day.
They had some very interesting things for sale there, like an 800 to 1 ratio gear box made out of a series of planetary gears. Not a practical device, but an interesting demo. A heart made out of gears that twists out of shape in three dee and a cube of similar design.
You can also download files and print interesting things.
There is also a guy building a giant "printer" that will print houses using cement instead of plastic.