Mark Hamill: A Force to be Reckoned With (2002 A&E “Biography” TV special)
https://www.youtube.com/watch?v=9AyHZyf0tcM - from the StarWarsArchivesCom YouTube channel (43 minutes long)
The blurb:
“Actor Mark Hamill becomes a breakout star starring as Luke Skywalker in the Star Wars film series, but he also finds great success as a writer and voice artist as well.”