Initially, young Peter (Oakes Fegley) was happy that his grandpa Jack (Robert De Niro) was moving in with him and his parents (Uma Thurman, Rob Riggle). That lasted until he learned Jack was getting his room...and that he was ticketed for the attic. Peter subjected Jack to a barrage of pranks to get him to move out--but the cagey codger proved to give as good as he got. Fun take on the Robert Kimmel Smith kidlit staple co-stars Christopher Walken, Cheech Marin, Jane Seymour, Laura Marano. 94 min. Widescreen; Soundtrack: English.