Imagine this: you are viewing a node, and hit alt-e. That keystroke brings up a node edit form. Or instead of dragging blocks, taxonomy terms, and menu items, you merely hit the "down" key. I wonder, may this strange device called a "keyboard" be of use to us? Well, regardless, there's a freestanding jquery plugin that's done most of the work already. The question is: are the Drupalites FOR or AGAINST the keyboard?*
See Mike Hostetler's keynav plugin for jQuery