The Blue Microphones Snowflake USB mic works on both Mac and PC with no drivers to install. It can be placed on a desk or flat surface near a computer or mounted to the screen of most laptops. Snowflake offers a condenser, pressure gradient transducer, cardiod polar pattern, and sample/word rate of 44.1 kHz/16-bit.

Applications include podcasting, voice recognition software, iChat, and VoIP software such as Skype and Vonage, as well as dictation, field recording, lecture recording, and narration for slideshows and PowerPoint presentations. It also can be used for recording music via GarageBand and other multitrack recording software.

System Requirements
Macintosh: Mac OSX; USB 1.0 or 2.0; 64MB RAM (minimum); Windows: XP Home Edition or XP Professional, USB 1.0 or 2.0, 64MB RAM (minimum)

MSRP: $79

More Info
http://www.bluemic.com/products/snowflake