Racing Stripes, 2005
As the gruff voice of a gruff-voiced horse, Thompson showed a darker side. His Sir Trenton was out to sabotage Stripes (a zebra voiced by Frankie Muniz), because, see, Stripes wanted to be a racehorse, but Sir Trenton wanted his son, Pride, to be the champion — and he'd stop at nothing to see the family legacy carried on! Point is, neither Frankie Muniz nor Thompson is really making movies anymore, and this might be why.