More to explore:
The Making of Star Wars: The Definitive Story Behind the Original Film: Amazon.co.uk: Peter Jackson, J.W. Rinzler: Books
At one point, in the second draft of the script, Lucas got rid of Princess Leia and turned Luke into a girl. Gallery: The Making of Star Wars
George Lucas showing Mark Hamil how to kill a Storm Trooper/ "Star Wars" (1976)
Anthony Daniels being C-3PO Gallery: The Making of Star Wars
There's always one that's here to screw up the program.: Star Wars, behind the scenes...
Star Wars - Behind the scenes
Harrison Ford BTS
They couldn't stop laughing long enough to get the scene done, Mark and Harrison were a pretty good comedy team. Add that to the fact that Carrie is easily amused and...Well, good luck getting a serious movie done. lol
Carrie Fisher as Leia.
Too Bad I Quit
Star Wars - tattooed Leia. not sure but looks like the work of Mike Giant
Peter Mayhew has posted a collection of behind-the-scenes photos from filming the first three Star Wars films