I just moved in to my new (to me) house about 2 months ago.My wife and I decided that we would see if we could attempt to go without sat or cable to save a few bucks a month (about $60). We did get the necessary cable modem line (7 MBps).
I am amazed at how things have changed in the past 5 years. There really is no need for cable or sat anymore. Here's what I've observed:
1. With a decent antenna (mine was already on the house) I get crystal clear HDTV ATSC signals meaning my picture quality is equal, if not better (uncompressed) than over the paid lines. The days of snow and ghosts are over.
2. The standalone TiVo HD I got keeps my DVR experience in tact.
3. 90% of what I watched was on network or syndicated TV and available free. The rest was HGTV, Comedy Central, or other filler which I haven't felt any loss for.
4. I thought I would miss MLB Extra Innings. While MLB.TV isn't quite as good because it bypasses the Tivo, it has done the job fine and looks great hooked up to my TV in full screen mode. DirecTV really lost out on this one. i wanted to keep the dish, getting just this package. They wouldn't do it unless I kept a base package - now I feel no need to ever call them back.
5. Where has hulu.com and tv.msn.com been all my life? Hulu is better because silverlight sucks.
6. Amazon UnBox on the Tivo is great in a pinch, but will be likely replaced by a Roku box and a netflix account soon.
7. The money I'm saving is partly going back into kids DVDs for the play room.