https://github.com/Ascoware/get-iplayer-automator
2017-04-26: BBC support is dead until further notice. GiA is currently unable to download iPlayer programmes. GO TO NEW REPO ABOVE.
The goal of Get iPlayer Automator is to allow iTunes and your Mac to become the hub for your British Television experience regardless of where in the world you are. Currently, Get iPlayer Automator allows you to download and watch BBC and ITV shows on your Mac. Series-Link/PVR functionality (BBC only) ensures you will never miss your favourite shows. Programmes are fully tagged and added to iTunes automatically upon completion. It is simple and easy to use, and runs on any machine running Mac OS X 10.7 or later. And since the shows are in iTunes, it is extremely easy to transfer them to your iPod, iPhone, or Apple TV allowing you to enjoy your shows on the go or on your television.