Hugh Grant really, really did not want to dance in Love Actually. He and director Richard Cuttis had a very large disagreement on how his character, the Prime Minister, should be played. Grant didn’t think the character should be whimsical. He wanted the part to be grounded, but Curtis wanted the opposite. The whole thing came to a head during the dance number, which Grant refused to rehearse.
“He kept on putting it off, and he didn’t like the song—it was originally a Jackson 5 song, but we couldn’t get it—so he was hugely unhappy about it,” Curtis explained. “We didn’t shoot it until the final day and it went so well that when we edited it, it had gone too well, and he was singing along with the words!”