This film cites the SIFF screening as its opening engagement. It is a documentary about ventriloquism, with interviews of many, many practitioners of the art, along with the director of a museum of ventriloquism, which I didn't know existed. To me it was notable because of the generous collection of clips from the files of many well-known ventriloquists, including famous pairs like Edgar Bergen and Charlie McCarthy, Paul Winchell and Jerry Mahoney, plus world famous Seňor Wences (of Ed Sullivan fame) and his well-known box.
The interviews include the hows and the whys, plus insider tips on engaging an audience through ventriloquism. I found it fascinating.
Post Script: The 2009 SIFF evaluators liked this movie, too.