I'm using Spaces on OS X, and I'd like to replicate the Ctrl-Alt-<arrow> functionality (or is it Ctrl-Alt-<arrow> -- I can never remember) in Gnome that causes the currently selected window to move to another virtual desktop. This is far and away a more pleasant way of moving applications from desktop to desktop.
Is there a built-in way to do this? How about some kind of applescript or Quicksilver trigger? Third party app? I'm willing to pay a small amount for an app that does this, so Free-as-in-beer is not required.
I am specifically NOT looking for a way to do this that requires using the mouse.