Since i am planning to buy an HD capable TV, i would like to know a few things. 1.Are there already HDTV channels?Is is available only in US?What i need to get these channels with HD resolution? 2.Are there HDTV resolution DVDs and players?I saw one playing in a local showroom but it didn't seem like a consumer product. 3.Why do HDTVs still use interlacing when progressive scan is supposed to give a better film like picture?The common high resolution of HDTV is 1080i.Though there is 780p and 1080p they are not supported by many HDTV units. Playing 1080i on a big screen like say 60" should make it look more normal TV doesn't it??