Titan supercomputer. Source
The Oak Ridge National Laboratory has done it again. This picture is of Titan, the worlds newest and fastest supercomputer. Running at 17.5 petaflops (that's 17.5 million billion operations per second), this computer beat out Sequoia, the previous champion. With this new computer, the U.S. now has two computers above Japan's K computer, a previous first-place super computer. I recommend reading more about it in this article.
I only wish I had a computer this fast, but then again, I suppose I'm not running the amazingly complex research programs that Titan will be running.