Baz Luhrmann is serving as a guest judge on the hit ABC dance show on Monday and Tuesday while as head judge Len Goodman takes a week off.
The 47-year-old Australian filmmaker wrote and directed "Strictly Ballroom" in 1992, which launched his film career.
"Dancing" host Tom Bergeron says that movie "was a major inspiration in the creation of this little show."
Luhrmann says his mother was a professional ballroom judge and that he called her for advice before his two-day stint on "Dancing."
Singers Aaron Carter and Mya came out on top Monday night with scores of 27 each, Carter in a green tuxedo, danced a Muppet-inspired quick step. Mya jived in silver sequins.
Close behind was entertainer Donny Osmond, who scored 25 with a jive, danced to "Secret Agent Man." Osmond, 51, took good-natured objection to several of the judges' references to his age.
Scoring at the bottom were model Kathy Ireland and former House Majority Leader Tom DeLay, who each scored 18. DeLay stumbled at the end of his tango, almost dropped his partner and apparently hurt himself in the process. He was wincing in pain as he listened to the judge's comments.
Kelly Osbourne, whose Viennese waltz last week captivated judges and audience members alike, said she felt under pressure to repeat the performance. She faltered in her tango and never recovered, giving away the missteps with her expressions.
She scored 19, which seemed to be the popular score of the night. Also scoring 19 were professional fighter Chuck Liddell, actress Melissa Joan Hart, and skateboarder Louie Vito.
The other dancers and their scores were: chef Mark Dacascos, swimmer Natalie Coughlin and actress Debi Mazar, all 21; model Joanna Krupa and NFL star Michael Irvin, both 20.
The audience apparently disagreed with the judges' scores. Audience members did so much booing that host Tom Bergeron quipped that Luhrmann might be regretting his decision to be a guest host.
When viewer votes are added to these scores the dancer with the lowest total wiil be booted from the show tonight. During last week's three-night premiere, singer Macy Gray and actor Ashley Hamilton were sent packing.