Conversation so far:
Are there any other interesting aspects about the article about the musician Jack Johnson?
In addition to his later success as a musician, Jack Johnson is also an accomplished filmmaker.
What else was the musician Jack Johnson known for besides being an accomplished filmmaker?
The musician Jack Johnson also starred in the 2004 surf film A Brokedown Melody.

Question: Was that all he did in film?
Self-contained rewrite: Was being an accomplished filmmaker and starring in the 2004 surf film A Brokedown Melody all that the musician Jack Johnson did in film?