Christoph Waltz plays Qohen and he looks nothing like Christoph Waltz.Matt Damon makes an unexpected cameo in the film as the mysterious “Management” guy. Damn does a solid job delving into the character whenever he appears on screen.Lucas Hedges who plays Bob. Hedges character is all over the place. He’s wacky, outspoken, and foul-mouthed. He’s pretty entertaining.  Other recognizable actors making cameos in Zero Theorem are Tilda Swinton, Peter Stromare, and David Thewlis.Zero Theorem available currently on VOD and opening in theaters nationwide on September 19th is the latest wacky adventure from filmmaker Terry Gilliam.