At MacDowell in 2004, Karl, Nussbaum completed a book of 200 new collage sketches and film backgrounds for an entitled film project about traveling through the human body. His recently finished film, Thanos and Eros screened in film festivals in Berlin, Hamburg, South Korea, Montreal, Toronto, and Philadelphia.
During his 2005 residency, he continued work on the storyboards and script for The Transparent Man, a film project about tiny people traveling through the human body. He also finished a cycle of four short animated film sketches, and made a few dozen new collages and some biological props.