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!"
Apple's also got some great HD clips available in Quicktime format:
http://www.apple.com/quicktime/hdgallery/
Well I assume they're great.... my 3+ year old laptop couldn't handle the 1080p clips connected to a 1900x1200 monitor. Time for a new computer.