LEGO Art by Nathan Sawaya: "THINK!"
The Bored Panda link actually has twenty amazing LEGO art images, but this one's my favorite....
For more, see Nathan Sawaya's website
Here's a list of Nathan Sawaya's upcoming shows.
He's got a sweet Lego Motorcycle and an awesome Lego Dinosaur but for some reason I'm finding Circle-Triangle-Square fascinating.