In addition to voice acting credits, Baker has appeared on game shows such as Legends of the Hidden Temple (credited as "Dee Baker") and Shop 'til You Drop. In 1999, he voiced the "Pig George" in the movie My Brother the Pig. In 2007, he is the voice of Captain Jack Sparrow's talking parrot in the newly refurbished Pirates of the Caribbean rides at Disneyland and the Magic Kingdom.
Baker is known for his role in the series Avatar: The Last Airbender as Appa, Momo and various other voices. He also came back for the sequel series The Legend of Korra as Naga, Pabu, Oogi, council member Tarrlok and United Nations commander Bumi.