Let the hive mind of Engadget get that for you.
"I've found myself using my PC for a lot of conversations lately, and I'm also considering recording a podcast to share with anyone who will listen. There are tons of USB headset / microphones out there, and I'm hoping someone has some solid recommendations based on experience. I'll consider both headsets and standalone mics, by the way, but I'd like to keep the bill under $100 if possible. Help!"
Like Miggity said, this isn't necessarily true... all OTA HD stations here have crammed their signals with subchannels. The ABC station (supposedly HD) here runs an all-weather local channel, FOX (480p widescreen), CW, and Telemundo...
I didn't even know you could physically cram 5 stations onto one signal, but apparently you can. And they all look terrible.