Rubik Cube
Yes.. that wonderfully frustrating little puzzle is making a resurrection of sorts, thanks in part to Will Smith and his latest movie - In Pursuit of Happyness.
I've found a good tutorial if you would like to learn to solve Rubik's cube in a minute or less..
It's a PDF, and you can right click and 'save as' to your desktop..
Here's a video of Toby Mao of the USA, the current world record holder, sitting the record of just over ten seconds..