This modular DNA PC concept looks quite similar to the Bookshelf Microsoft ISDA design concept from a few years ago, but it's slightly different in that it's almost entirely made out of cubes. The core idea is the same: you've got a base "PC" that you add features and peripherals onto by attaching them together. Keyboard, storage, RAM, and other components are all interchangeable, which gives the final PC construction a bit of a kindergarden/LEGO look. Interesting, yes, but a bit too far-fetched to be really usable.
@nutbastard: Of course, the problem is, the only mac you'll find that will accept that card is a Mac Pro. And the Mac Pro is way overpriced for home users, mostly because of the use of Xeon processors. Which goes back to my primary complaint about Apple: they do not have an enthusiast line.