SwitchEasy ThumbTacks Microphone
SwitchEasy has released a very cool microphone to plug into the iPod Touch 2G headphone jack. It looks like a standard plastic push-pin and only sticks out of the touch about half an inch.
For more information see http://switcheasy.com/products/ThumbTacks/ThumbTacks.php
UPDATE: My mic arrived yesterday. It works well enough if the mic is close to my mouth. But it might be too quiet for recording a meeting or lecture.
Also I forgot one very important thing. I thought I might be able to use this for VoIP programs. However, as soon as you plug the mic into the headphone jack, the speakers on my 2G touch turn off. So if I want VoIP I'll still need to get a combination mic and headphones.