Hey all, We purchased our first HD TV set in December, splitting the costs, and I've been watching alot of HD content since then, so a question... What exactly does HD entail? Sports and news casts are recorded with an HD Camera, so they are true high resolution and native widescreen. However, what about Movies and TV shows? For instance, I was watching Knight Rider in HD on the universal channel. The Picture dosn't look stretched or distorted, like it would if you fit a normal 4:3 picture to fit your widescreen TV...So, do we loose any picture when they do this to 4:3 shows? Also, for movies... When the HD is displayed, does this mean they have been cleaned up for the best possible picture and sound possible, or that it's just being presented in it's original widescrene and sound ratio? sorry to sound like a newb....but just something I've been wondering...I'm also surprised that all news casts and commercials arn't filming in HD already.... Thanks!