Use Emacs/Readline Key Bindings in OS X

OS X appears to support Readline key bindings natively in any text area input. Basic support is built in for the following:

ctl-a          : beginning of line/paragraph
ctl-e          : end of line/paragraph
ctl-n          : next line
ctl-p          : previous line
ctl-f          : forward on the line
ctl-b          : back on the line
ctl-shift f/b  : highlight text
ctl-shift a/e  : highlight to start/end of paragraph
ctl-shift n/p  : highlight next/previous line
ctl-k          : kill to the end of line

I've found this works in almost all OS X apps, from browsers, to chat, and keynote. The only exception I've found is in Microsoft products (e.g. Word).