Video Conferencing for Unix?

LordDavon asks: "I have been trying to find a good video conferencing solution for Linux. The main issue is that my family and many friends are subjects under the Microsoft tyranny and use Microsoft NetMeeting. Although it is a nicely featured application (Whiteboard, VNC, File Transfer, etc...), I am failing to find a comparable application for Linux. Is there a single, low cost, multi-platform application that can compete?" While I'm not so sure about the existence of a whole suite of Open Source applications that can compete with NetMeeting, are there apps that are usable solely for video conferencing? We touched on this exact question two years ago, we also talked about shared whiteboards as well, although a bit more recently. Are any of you out there using Linux (or any Unix clone for that matter) in Video Conferencing? If so, how?