Trivia: The ending song scene, during the credits - singing wasn't strange to either of the actors: Zellwegger had a leading role in Chicago, and McGregor in Moulin Rouge, movies where they had several song scenes. In fact, the scene was only added at the insistence of the actors.
Trivia: The MAD Magazine Catcher Block reads with a parody of 1960s feminist Barbara Novak on the front was created specifically for the movie. A special 1960's-style cover was drawn by one of the MAD artists.
Trivia: Near the beginning of the film, Catcher Block makes the remark that Barbara Novak didn't sound like a blonde over the phone. As it turns out in the end, Barbara was not a natural blonde at all.
Answer: No; Holly Palmer and Michael Bublé.
Rooster of Doom