Ubuntu – Emacs-like keybindings system-wide

Is there a way to set Emacs-like keyboard shortcuts (at least the subset mentioned below) for the whole OS? This is possible in some apps such as the terminal, Emacs (go figure 🙂 and additionally through special plugins in some other apps (Eclipse), but I got so used to C-f-ing through text and never having to jump to arrows that I'd like to be able to do this system-wide so that I can do it whenever I'm typing – e.g. searching for songs in Rhythmbox, typing stuff into the dash or the HUD, writing mails in Thunderbird or Gmail… The combos I'm most interested in are:

• C-f – forward
• C-b – backwards
• C-a – home
• C-e – end
• C-d – delete
• C-k – delete line

(note for non-emacs users – C means Ctrl)