VoiceStick – VoIP via USB
Voicestick.com has a unique offering which includes a USB hardrive/headset adapter, a softphone & low rate calling. Pretty cool, no more downloading sofware, just take it with you on a USB key. The headset [same wired headset as your cel phone] plugs into the USB key. It would be really slick if they could come up with a Bluetooth verison of this.
WebRTC.is 