Never portrayed as the good guy, the handsome Beauceron, "Henry," was at least not completely on the dark side in Hotel for Dogs (2008). In possibly the largest film role the breed has ever had, he was 100% bad dog as "Bosco" in Marmaduke (2010). The latter was played by a Beauceron named Axel.
You can also catch Beaucerons in Moonraker (1979) (see freeze-frames #9 below), The Bear (1988), Le pacte des loups a.k.a. Brotherhood of the Wolf (2001), and, if you look very closely,The Lord of the Rings: The Fellowship of the Ring (2001).