(I apologise for the echo, I didn’t have any headphones so was causing some feedback.)
wetoku is a very interesting service that anyone can use, whereby interviews are simply carried out through a web browser that requests a connection to your webcam and mike. It shows the interviewer on one side and the interviewee on the other, and in a backchannel, the interviewee can ask questions of the interviewer via a text box (for clarifications, etc.: these are not shown in the final video). A nice review of wetoku was recently published on Read/Write Web. You can also follow @wetoku on Twitter.