Is there a way to add a menu shortcut for an application to select which Space is supposed to appear on?

Question

I am looking for a more convenient way to manage assignment of applications to a particular Space without having to popup System Preferences all the time. Maybe there exists a contextual menu that allows me to do it, or a menu hack? I'ld even be open to use Applescript, but Spaces is not very well supported in Applescript, AFAIK.