Hello! The best movie of all time for an 11 year old boy would likely be a movie that is age appropriate and entertaining. A great choice for this age group would be the Disney Pixar classic, Toy Story. This movie follows the adventures of a group of toys who come to life when their owners are away. It is full of humor, adventure, and heartwarming moments that make it enjoyable for all ages. It also has a strong message about friendship and loyalty that resonates with children. Toy Story is an excellent choice for an 11 year old boy looking for a great movie to watch.