David Prowse, the man behind the Dart Vader mask in the original Star Wars trilogy, at MegaCon 2002 in Orlando.
Source: MegaCon 2002: David Prowse
From the program:
“Heidi Hollis will present on the mystery of the UFO and alien phenomena that thousands of people, if not millions, worldwide are reporting. Hear how differences in alien contact are occurring and how that ties in with the raging war many of the alien beings are speaking of that they are currently engaged in.”