When choreographer and dance instructor Ines Markeljevic rounded up 62 people in Toronto in 2006 to perform the dance from Michael Jackson’s “Thriller” video, she probably didn’t imagine her humble gathering would spark a worldwide phenomenon. In 2007, Thrill the World included 1,722 dancers in 52 cities on five continents. In 2008, for the first time, Los Angeles participated, mustering 114 dancers who performed at Hollywood and Highland. (It’s rumored that the Gloved One watched the dance from his God’s-eye view in a helicopter; who knows where he’s watching from this year?) But that’s nothing compared to what Thrill The World staged this.