DVI Input

My LG DLP TV has a DVI input..should I buy a DVI cable and connect it to either my DVD player or my cable system??? I have a HD TV.

If you have DVI components then this is certainly worth the try. I suggest you go to www.A2Zcables.com and read some of the suggestions/reviews.
Try both, if you like them over analog connection, buy an external DVI switcher (Geffen of Extron - Geffen is only $400, Extron could go much higher) and use both!