I recently got into this great podcast by comedian Matt Gourley called “I Was There Too,” in which he talks with actors (often other comedians) who had bit parts in famous films and what the experience was like.
Of interest to this forum, he recently did a trio of OT episodes, talking first with Anthony Forrest (“Move along” sand trooper and the deleted Fixer), Clive Revill (and in the same episode the guys from Star Wars Minute to discuss the mystery of the woman who physically played the Emperor hologram), and Kevin Thompson (who played a number of Ewoks in ROTJ and the two TV spin-offs).
Highly recommended:
http://www.earwolf.com/show/i-was-there-too/