Default ShortCuts (Compiz from SuSe) 

Switch windows  = Alt + Tab

Arrange and View All Windows = F12 turns on or off; clicking a window will zoom it to the front

Switch desktops on cube = Ctrl + Alt + Left/Right Arrow

Switch desktops on cube - with active window following  = Ctrl + Shift + Alt + Left/Right Arrow

Rotate cube manually = Ctrl + Alt + left-click

Make window translucent/opaque = currently only possible with the "transset" utility

Zoom-in once = Super-key right-click

Zoom-in manually = Super-key + wheel mouse up

Zoom-out manually = Super-key + wheel mouse down

Move window = Alt + left-click

Snap Move window (will stick to borders) = Ctrl + Alt + left-click

Resize window = Alt + right-click

Bring up the window below the top window = Alt + middle-click

Slow-motion = Shift + F10

Water = hold Ctrl + Super key

Rain = Ctrl + F9

Change Opacity  = Ctrl + Alt + Wheel mouse (up + | down -)

Film effect - changing dekstop = Ctrl + Alt + Down Arrow
(hold the Ctrl+Alt then for changing desktop + Left/Right arrow.
You can also hold down the left mousebutton to move the "film")
Can be used in combination with the "Switcher".