Darth Vader's REAL voice
Strangely enough he has an accent not unlike those found on 21st Century Earth on a group of islands called the United Kingdom:
I remember when David Prowse (along with Jeremy Bulloch/Boba Fett) was a guest at Comix Connection-Camp Hill back in the '90s... David's voice was a bit deeper than that due to adding 20 years to it. Those were some fun times, lemme tell ya. To this day I still brag that BOBA FETT BOUGHT ME A GUINNESS! 'Nuff said.
(Thanks to Mike Bollinger for the link!)