De Niro and Thurman are too good – and too famous – to be in a picture like this. The same can be said for Christopher Walken, who appears in several scenes as one of Ed’s buddies. These actors elevate the movie to a degree, and I admittedly laughed, probably more than I should have. That said, The War With Grandpa is not objectively good. It mixes TV comedy plotting with an A-list cast and thematic elements that are slightly disturbing.