The Labtec Dialog LVA-5501. Not sure how new this is, but in this VoIP, talk talk, gamer dude era the idea sits well. A little box that lets you use the same headset for both your normal phone calls and for your computer audio/voice work. Priced aggressively too at just $24.95.
Connect a single headset to your phone and computer. The Dialog series combines telephone and Internet communications in a single, easy-to-use headset system, ideal for hands-free telephone communication, Internet voice chat, video conferencing, multi-player Internet gaming, and speech recognition…switch between phone and computer at the touch of a button.