Ubuntu standard hotkeys I always forget

Actually, I only wanted to note down one. "Activate window menu". The hotkey for it is: ALT + Space. You then have access to the move command. This is particularly useful when your window just happens to slide under the menubar like this:


Update:
Alt-F7 Move Window


I'll add to this post as I forget & remember more hotkeys. :)

Enjoy!

References:
* http://vntutor.wordpress.com/2007/05/23/useful-hotkeys-in-ubuntu/