Prince Charles will appear as an optical illusion (a hologram) on a conference about the environment and energy in Abu Dhabi (held between 21st and 23rd of January 2008). By doing so he will save the earth another amount of Co2 (he need not go by air plane).
This link will lead you to an explanation in the Daily Mail.
During the event transit Pluto will be conjunct the prince's Jupiter, so I guess the Star Trek-alike event will be a succes.
Birth Chart of prince Charles