Ferrell, known for his Bush impersonation on "Saturday Night Live," said Friday there's nothing derivative about the production. He says it will surprise people with its twists and turns and what it has to say about Bush.
Executive producer Adam McKay says the show aims to be funny but also hold the Bush administration's feet to the fire.
McKay and Ferrell spoke to the Television Critics meeting in the Los Angeles area by satellite from New York.
"Will Ferrell: You're Welcome America. A Final Night with George W. Bush" is set to begin previews Jan. 20 and open Feb. 5. It will air live on HBO March 14.