Hauppauge MyTV.PVR TV Receiver for Apple Mac
Hauppauge’s best option is the external device, which while bulky will provide much better results than their other devices, such as the MyTV2Go.
As well as watching TV, MyTV.PVR also allows you to listen to radio, and is even USB 1.1 compatible, so you can use it with G4 machines as long as they are above 500 MHz and running OS X 10.3 or later.
This device isn’t really for portable use, however – you probably won’t be using the Hauppauge MyTV.PVR with your laptop, for instance, as it requires a mains electricity connection to work. The Hauppauge MyTV.PVR is purely a device for iMacs, Mac Mini and any other Mac that doesn't do any regular travelling! You should be able to pick up one of these for around $70 or £85 if you're in the UK.
Hauppauge have found themselves the center of some bad press over the years, particularly for supplying dodgy software drivers on Windows, but they seem to have at last put that behind them.
Full details on the Hauppauge MyTV.PVR can be found at www.hauppauge.com.