Either component with separate sound, or HDMI which includes sound. Component is analog and HDMI is digital. I've never been a fan of running my digital video (HDMI) through a receiver. Too many devices to turn on to watch TV. I run my HDTV (satellite) directly to my Sony SXRD and my digital sound directly to my Denon receiver. If I just want to watch TV I don't have to turn on my receiver. If I want surround sound I then turn on the receiver.
Our new HDTV has the following connections..
Cable/Antenna Inputs, Number: 1
Component Input Sets, Total Number: 2
Composite Video Inputs, Number: 2
S-Video Inputs, Number: 1
RGB 15 Pin Connector: Yes
Analog Audio Output: Yes
Analog Audio Output, Type: Fixed
Digital Audio Output: Yes
Digital Audio Output Type: Optical
HDMI Inputs, Number: 3
I want to buy a 5.1 theater system but I'm sort of mixed up on which connection type to look for, should I just worry about getting a receiver that has an HDMI output, or is one of the other connection types better?