xTag USB microphone

The xTag from Revolabs is a wireless microphone with a charging base that connects to your computer via USB.  A great microphone for use in the classroom, lab, or any other place you do not want to be tied to the computer via a cable.  My first test of this microphone was at EDUCAUSE 2007 in a large seminar room.  It worked perfectly everywhere I wandered.  You can also pick up one that has analog audio out on the charging base, to plug into a sound card, mixer, or sound system.  

Revolabs makes a whole line of microphones for conference rooms, and podcasting.  Check them out online at http://www.revolabs.com.