Best Mouse-free Windowmanager?

An Anonymous Coward writes "I've been using fvwm2 for quite some time now as I don't need to use the mouse much. I don't have time to try every window manager under the sun, but are there newer window managers out there that have better 'usability' characteristics when it comes to avoiding the mouse? I still have a mouse handy for browsing, etc. so I don't need to do away with it altogether.). Thanks."