A Michael Jackson impersonator, who goes by the name of "Hector Jackson," leads a group of dancers during a rehearsal for an upcoming homage to Jackson in Mexico City Tuesday, Aug. 18, 2009. Mexico City officials are organizing a mass event in honor of Jackson, calling for thousands to come dance to the song "Thriller," Aug. 29, in hopes a breaking a world record. In background, the Mexican Palace of Fine Arts. (AP Photo/Gregory Bull) (Gregory Bull, ASSOCIATED PRESS / August 18, 2009)MEXICO CITY (AP) — Led by a Michael Jackson impersonator in sunglasses, a sequined black jacket and white glove, dozens of the singer's Mexican fans are practicing the steps in his "Thriller" video to attempt a new world record.The organizer, Carlos Contreras, says more than 10,000 people have signed up to take part in the dance routine Aug. 29, which would have been Jackson's 51st birthday. A group of about 50 showed up for practice Tuesday.The Guinness Book of World Records says the most people to dance to "Thriller" simultaneously in one place is held by a group of 242 College of William & Mary students who performed the routine in May.The previous record was 147 people at an event held in 2008 at a British secondary school.
