Self-Replicating Repairing Robots (http://www.forofriki.com)

This time.....you don't control the tetris bricks....

Holy shit !

Sweet!

magnet attraction

NanoTech was the first thing that came ot mind when I saw this. You guys watch movies like terminator? When The robot's armour gets a hole through it and it repairs itself? This is a Big model. When they actually integrate this into nanotech, We'l have really awesome armours.

or you could use it for playing a wierd form of tetris...

cool but completely useless

with this... you culd buld bridges that could never fall! ... or the most popular toy of 2012

Everything. This is the future right here. :)

Oh, never mind. You're 14.

Okay, I'll explain it. Nanotubes are made of carbon atoms that are bent into long tube shapes and are very sturdy, so they're good to be used in construction of buildings among other things. Nanotubes are hard to make by ourselves, but a self-replicating molecule with a "universal computer" can be programmed to make other molecules which can make the tubes atom by atom.

You could use molecular "robots" to make complicated molecules that can fight diseases too.