Oh... and also procrastination central.
The quote from the site:
"shivering kittens is a panic-inducing puzzle game for Mac OS X, where you must rescue kittens from their icy imprisonment! A block-matching puzzle game, shivering kittens tasks you with forming lines of frozen kittens to release them from their icy imprisonment, and then with forming groups of those thawed kittens to rescue them!"
Where to get it: shivering kittens
I apologize in advance to all you MAC users.