How do I do that thing [sorry, don't know what its called]

[scan]

When I'm using my mighty mouse on my PB and I squeeze the side buttons I can see a kind of overview of all my active windows and I can just clicked on anyone of them. How do I do this when I'm not using the mouse?

 

[PlaceofDis]

it is the F9 through F12 keys, although you can also customize it in the System Preference pane called Expose.

i have mine set to 'Hot Corners' so all i have to do is push my cursor to a certain corner and it does the expose feature i desire.