Greenman has also collaborated on celebrity memoirs. His most frequent collaborator has been Questlove; he co-wrote the hip-hop memoir Mo Meta Blues, a food-themed book called Something to Food About, a book about creativity and innovation called Creative Quest, and a conceptual cookbook called Mixtape Potluck. In addition, he wrote memoirs with the funk musician George Clinton and Brian Wilson, co-founder of the Beach Boys, as well as with the actress Mariel Hemingway, Gene Simmons of KISS, and Simon Cowell of American Idol. The Questlove and Wilson books were best-sellers.
