"toggle window fullscreen" is unbound. I bind this to
Alt+F11 by default (F11 is used by galeon/mozilla/...
to toggle their special fullscreen modes. Also windowlab
uses the same binding for this).

To add global keybindings (to start a particular application
for e.g.), you need to use gconf-editor to edit the
appropriate items in:
  apps->metacity->global_keybindings
  apps->metacity->keybinding_commands

Key	Action	Notes
Alt+Tab	cycle through windows on workspace using icons
Alt+Esc	cycle through windows on workspace by bringing to foreground	you can combine this with Alt+Tab
Ctrl+Alt+{Left,Right,Up,Down}	Change workspace
Alt+LeftMouse_move	move window	anywhere in window
Shift+Alt+LeftMouse_move	move window while snapping to windows/desktop border	anywhere in window
Alt+MiddleMouse_move	resize window	direction dependent on part of window clicked
MiddleMouse_click	send to background	titlebar only
LeftMouse_click	send to foreground	titlebar only
Alt+LeftMouse_click	send to foreground	anywhere in window
Alt+F4	Close window	I change this to Alt+x
PrtSc	Take screenshot of desktop	Alt+PrtSc to take focused window