Mozilla + Mac = An experimental version of Firefox to be used with the new multi-touch MacBooks.

These are the actions you can perform with the different gestures:

* Swipe Left: Go back in history [press Cmd to open it in a tab]
* Swipe Right: Go forwards in history
* Swipe Up: Go to the top of the page
* Swipe Down: Go to the end of the page
* Pinch Together: Zoom out
* Pinch Apart: Zoom in
* Twist Right: Next tab
* Twist Left: Previous tab

[Via Mozilla Links]