Panasonic Japan announced a video-conferencing system today called the KX-VC500 that allows you to use HD-quality screens for communicating. This is really pretty cool and takes the entire idea of video conference to a new level of sophistication.
These connections will be made over the web and allow for HD-quality video to be sent both ways. However, a microphone and a camera do no come with the unit, meaning you have to use an HD camera of your own choosing.
You can use the unit with any HD screen. It has an RGB interface and two HDMI ports. A remote control is included. Only set to be available in Japan at the moment, you'll be able to get your hands on the KX-VC500 starting on October 1. Pricing is not yet known.