Let that sink in.

It is a movie where a father apologizes to his son for not believing in him. It is a movie where the villain is defeated not by a laser, but by a child pointing out that his TV show is mean. The movie famously ends with the matriarch of the family, Ingrid (Gugino), uttering the thesis of the entire franchise: "Do you think you can just walk in here and save the day, like you're some kind of spy?"

He wrote the script in two weeks. He built the gadgets out of off-the-shelf toys and computer mice. He cast Antonio Banderas (a dramatic heartthrob) and Carla Gugino (a serious actress) and told them to play everything with the earnestness of a telenovela. But the secret sauce was the casting of Alexa PenaVega and Daryl Sabara as Carmen and Juni Cortez. They weren't child prodigies; they were awkward, squabbling siblings who happened to have a secret spy agency in their basement.

Spy Kids stands as a defiant monument to sincerity.