Ahh... Well Festoon is long gone at this point and I really can't imagine how it would work. The N800/N810 supports "jingle-video" over GTalk or any other Jabber/XMPP server. The problem is there aren't any PC Jabber clients out there that support jingle-video yet. My bet is that you will see it added to the GTalk client this year though. Google has made some acquisitions that would be very helpful in that area.