I know the scene with Fett has been around, but I have never seen the entire video. If I'm not mistaken, we do get to hear Jeremy say "Ewok" in his voice while wearing the suit.
http://starwars.yahoo.com/videos/wa...the-ewok?lid=915f9d1703215b8b7d75aa09f4f4db95
http://starwars.yahoo.com/videos/wa...the-ewok?lid=915f9d1703215b8b7d75aa09f4f4db95