I received a Plantronics 510 bluetooth headset for Christmas. I love this thing.
The best part is that it's a 'multi-point' device. What that means is that it will connect to my phone and my laptop at the same time. I can be listening to the computer (CoPilot's voice directions) and when a phone call comes in, I push the button on the headset and have my call. When I'm done on the phone, I hit the button on the headset and it goes right back to the computer audio.
I also found a voice command system for WinAmp, so I can have it playing through the headset, and say commands such as "Pause, Play, Next, etc".
The voice control software is here (100% free) - If you get his, follow the instructions. You'll also need to download Microsoft's Speech addon (the link is on the :
http://www.winamp.com/plugins/details.php?id=148315