HDTV can currently be digitally recorded by the following ways:

• HDTV Tuner PC Card
• HD Capture PC card like Blackmagic Design Intensity Pro
• Firewire Source to Windows XP PC
• Firewire Source to Apple Mac
• USB Source to PC
• HDTV DVR, PVR like TiVo, Hauppage HD PVR, Elgato EyeTV HD
• D-VHS

....from four potential sources:

• Cable DTV
• Digital Television (DTV)
• Direct Broadcast Satellite DTV (DBS)
• C/Ku Band Satellite DTV