The Kung Fu Panda star clearly relishes his role as a parent - something he jokingly predicted before the boys arrived. "I'm going to be the best daddy on the planet. I'm going to enter the best daddy competition, and I'm going to win it," he once quipped to a US magazine.
Watching the antics of his elder son provides plenty of inspiration for the actor's own comic capers it seems. "Sam loves to wear his cape and run around the house pretending he has super blowing powers to keep people away," says Jack.