He is best known for his collaboration with mural artist and animator Blu, which resulted in the feature-length documentary Megunica, shot in 2006 across Mexico, Guatemala, Nicaragua, Costa Rica and Argentina.

Other works include music videos for bands such as Caribou, Scissor Sisters, Metronomy, Bright Eyes, Jovanotti, Jamie Woon, Bernhard Fleischmann, For a Minor Reflection and others, as well creating ads for companies such as Nike, Alfa Romeo, San Diego Zoo and Converse.

Aside from his commercial works, he directed PSAs for The Humane Society of the United States, National Geographic Channel, Boys & Girls Clubs and World AIDS Day.

In 2008 he crossed the Pacific Ocean aboard the cargo ship Portland Senator, and he made a film about the experience titled Ten things I have learned about the sea.

[4] Fonda is currently working on a project revolving around a skateboarding session on the biggest modern sculpture in the world, Il Cretto di Burri.