Robert Downey Jr. Used to Give Gumby Dolls to Andy Warhol for a Living 3.73K Henry Baker 05/28/10 12:30PM Filed to: The Late Show The Late Show David Letterman Robert Downey Jr. gumby Andy Warhol TV Video He also may just be the most charming man in the world. Robert Downey Jr. sat down on The Late Show last night to frankly talk about the ways he used to get by.