one time i randomly pressed keys and made my computer do cool stuff
i dont remember what i pressed
does anyone know what to press?

ctrl-alt-f1?




















(you get back with ctrl-alt-f7)

no
that just restarted my computer
but thanks anyways

well, maybe you should be a little more specific.

well like make it 3D or somethin
i pressed letters on my keyboard

If compiz is already enabled you can go from one desktop to the next with ctrl-alt-arrow_keys, or if the cube is enabled (I doubt it):
win-right_click and drag.

Depending on what compiz plugin you have enabled that will give you different effects.
You can configure them in Administration - Look and Feel - Desktop effects
(I believe - probably a little different, I don't have Ubuntu installed right now.)

You might have an "advanced desktop effects" button there. If not - install ccsm.

Applications - Add/Remove
select: "show all"
search for ccsm, and install it

then you can start it either by typing:
alt-f2
ccsm

or by going into the desktop effect settings.

Just play around with the settings... there's a lot of stuff you can do with it.

If it gives you any trouble, you can switch back to the default gnome window manager by typing:
metacity --replace &
either in a terminal or in the launcher (alt-f2)