Seriously. Even where I live in the middle of nowhere (about 43 mi. from the closest broadcasting city), I can get two beautiful quality OTA HD channels on my TV with a standard antenna. With a long-range directional antenna I could get several more (all the networks + PBS). Seems like it'd be a cheap option to invest a few bucks in a decent antenna and get all the networks in HD.

Go to Antennaweb.org to find out what's available from your house (you don't have to fill out the whole form...just your address.)