I’m using 2 Displays with Mac OS X 10.6 (Snow Leopard) and I would like to have a keyboard shortcut to move the active window from one display to another (not space).
I just found answers for moving between spaces or one hint for windows:
https://superuser.com/questions/62603/keyboard-shortcut-for-moving-window-to-another-screen
I use SizeUp, which has this feature and lots of other useful window management abilities.