Before buying a TV, you should do a little research on high-def televisions because most salesmen use techie-talk and you don't want to feel confused as you ask those questions you think you should ask.
Using standard composite cables (commonly called RCA cables) isn't utilizing the High Def capabilities of the TV.
Microsoft's Xbox 360 employs an HD-DVD that can be purchased separately and is capable of 1080p High-Def output.
The clips are available in High-Def, but can be watched on a regular TV.
The website DVD Talk has a section titled HD Talk dedicated to reviews of only DVD's in high def format.
