I've never seen them.
They are very cool

3D Pavement drawings

http://homepage.ntlworld.com/simon.wildgust/3D_Pavement_Drawings.htm

These have been around for ages, I think it is pretty cool also!

This is the first I have seen of these. that is pretty cool.

The first six are the best.

We had a street painting festival in our town, and the guy came and did a materpiece. It was just like all the other ones where he had people crawiling out of the ground.
It twas pretty neat.

is it done in chalk or what? is it permanent?

its chalk, and it comes off when it rains.

You spend 15 hours drawing on a street and then once it rains it all goes away....to frustrating for me.

made in chalk

that's indeed very cool.
The level of professionism must be high enough to make such a 3D effect with hands.

Not like things we can design with our graphic programme.

Definitely deserve my praise for him.

First time i've seen these and they do look very leet :D

sweet! some of them hard to tell what is real and what is fake which is pretty cool

...very cool stuff, amazing indeed... ...they are probably done in chalk, but they could be using spray, too, it would definitely make them more permanent..

...excellent work really, my congratulations fly out to the authors...

mantra, thanks for raising the awareness...

Wow, those are very cool... some extreme talent there!

it would definitely make them more permanent..

And more graffiti-like (in the eyes of the law) - I'm sure annoying the authorities isn't what these artists want. ;)