Visual Bindings is an on-screen full layout keyboard, with buttons for every key found on a standard keyboard. When mousing over a key, a tooltip frame pops up showing any action bound to that key, or any combination of modifiers plus the key. Example: Mousing over "F1" on my druid shows: Binds for F1: F1 TARGETSELF Ctrl-F1 SHAPESHIFTBUTTON1 Shift-F1 TARGETPET Most keybinding addons allow for easy binding of the keys, but I've yet to find one that intuitively shows the bindings already set...