I use a DTV converter box. I have 2 brands. I have a Channel Master and an Apex 502. Both are S-Video boxes. Picture is crystal clear. I would say the CM has marginally better picture quality and marginally better reception. The Apex has a better remote.
I get about 40 channels. We are very pleased with the results.
I also built an outdoor antenna. Here are some pics.
I also watch Hulu. That is great if you have good bandwidth.