cool details on how TDS captures the news networks' TV output every day; they use TiVos, not MythTV. what they have works well enough, and that's good enough for them (via Waxy)
EyeTV is proprietary technology used to enable you to view and record analog or digital TV on an AppleMac. It is a hardware and software solution. The hardware adapter connects to Macs via a USB port.
MythTV is a homebrew PVR project that I've been working on in my spare time. It's been under heavy development since April 2002, and is now quite useable and featureful.