The Coolest Thing in the Universe
No, it's not an MP3 player. (Though those gizmos are pretty darn cool.)
No, it's not Chow Yun-Fat. (Though he is arguably the coolest man in the universe right now.)
No, it's not even a working ice machine. (Though it would be extremely cool if day 18 was the last ice free day on this floor.)
Nope, as of today, the coolest thing in the universe -- officially -- is a cloud of ultracold sodium atoms at MIT. They were cooled to a fraction of a degree above absolute zero. You can read about it here.