If You Have Vista!!! :o

[jon the noob]

Press Alt+Tab

Alot might know about this, just thought it was a cool trick

 

[Msn_Muck]

yeah it works in XP too. nifty eh?

 

[Bahawolf1]

Haha, yeah its pretty cool..

Press the windows key + tab for a nice little feature to.

 

[Äߧý∩†H♠H䎀]

A simple way of doing it but I still prefer hitting the Aero Flip button on my mouse.

 

[Bobert93]

window + tab is awesom