Kurzweil Hologram! But really, look at the bottom link. . . 

Brief video of Kurzweil appearing via hologram at a conference:

Video advertisement for the technology, called “Teleportec” with super creepy futurism narration!

BUT, even COOLER is actually Cisco’s live virtual presentation of their “Telepresence” technology!

http://www.musion.co.uk/Cisco_TelePresence.html