If you’re looking for a really cool 3D Linux desktop do a search for Compiz. You’ll want the Compiz and CompizConfig packages from your distributions package system. In Ubuntu you can use the Synaptic Package Manager to download and install the necessary software.

Once installed you’ll want to open up the CompizConfig Settings Manger. (System – Administration – CompizConfig Settings Manager)

Check all the cube options.

Once you’re done with that you should be able to click your middle mouse button and move the cube (3D task switcher) around.

Note:Some computer hardware will not be able to use the Compiz. Most computers with Intel,Nvidia and ATI chipsets should work fine..