Belkin has a couple more iPod accessories available. The TuneTalk is an attached omni-directional microphone. Appearance wise the TuneTalk is obviously a microphone, so stealthy Bond spying may be a little tricky. It's nice and sproingy and looks like something you can stuff into someone's face in order to ask hard hitting questions.
Next is the TuneCommand, a wireless remote that will be available in August for $49. It supports ranges up to 150 feet. The TuneCommand uses wireless radio frequency, so walls are not a problem.