ANNECY – Matthew McConaughey will voice Buster, a showman entrepreneur koala running a legit theater in Illumination Entertainment’s upcoming music-driven event comedy, Illumination CEO Chris Meledandri revealed Wednesday at an Annecy Fest. Written-directed by Garth Jennings (“Son of Rambow”), and set for release Dec. 21, 2016, when the movie – that seem still untitled –...