Interesting, I'm not sure how to describe it: Area775. From the creators of Project Gizmo comes a package which gives you a (free) phone number which rings to your computer and any phone. It includes call screening and transferring of calls (even while in the middle of the conversation). Watch out for the fees though as the free service will ring your number and also happily charge you $2 US a call if you pick up the phone rather than answering it via the computer.