We recently dropped cable TV from our cable package because we were only using Netflix to watch programs. I purchased a Roku (http://www.roku.com/
) box and a high quality HD antenna for about the cost of two months of basic cable TV service. We still receive two DVDs from Netflix a month in addition to the streaming service which makes it the best entertainment value I have ever purchased.
If you have more than one person watching streaming video at the same time you will need cable as each stream should have one meg of bandwidth available. I'm paying $39 a month for my 22 meg Internet connection which I arranged after telling the cable company I was dropping their service :-)