[whit537]

The only thing I'm seeing that Ctrl-L is otherwise used for is to focus the address bar in a web browser:

http://lifehacker.com/#!5302587/get-firefoxs-ctrl%252Bl-shor...

http://en.wikipedia.org/wiki/Table_of_keyboard_shortcuts

Assuming one didn't care about clobbering that (you also get F6 there), I wonder if something could be done with a scancode map (see http://webpages.charter.net/krumsick/).