"The Lego Movie" explores what may be the essential question of Lego building as it applies to life: Must you dutifully follow the instructions, or can you combine pieces creatively to make anything you dream up? In the animated children's comedy, a repressive overlord (voiced by Will Ferrell) is so maniacal about controlling the residents of Bricksburg that he has a weapon designed to glue all the pieces of their world together, putting an end to freestyle play. Only a band of wisecracking rebels (including Chris Pratt, Elizabeth Banks, Will Arnett and Morgan Freeman) can stop him. The film is computer-animated...