After installing the restricted graphics card driver, there still isn’t a lot of options for fiddling with the desktop effects. You can change that by installing the packages:

• xserver-xgl , and
• compizconfig-settings-manager

through the synaptics package manager (system>adminstration>synaptic package manager).

Then all you need to do is go to system>preferences>advanced desktop effects settings and fiddle with all the fun but useless eye candy settings. Screenshot after about 2mins: