This is also from the Megaconference Listserv:

Internet2 Members had a session on desktop videoconferencing at their member meeting in April.

• The archive video of the session is online here.
• The PDF of the PowerPoint slides are online here. About halfway through the document is a great little chart comparing the four tools they considered: Polycom CMA, RADVision Scopia desktop, Tandberg MOVI and VidyoDesktop.

More resources to assist in our research and consideration!