Trivia / Michael Jackson's This Is It

• Development Gag: Unintentional, but still counts. During "Billie Jean," Jackson forgets the words during the second verse and drops back into his scratch lyrics from the demo version, for just a moment.
• What Could Have Been: Basically the point of the entire film. These rehearsals were never meant to be edited into a movie, and were filmed primarily for Jackson's personal archives; destined to be seen mostly in television B-Roll, and perhaps a "behind the scenes" featurette on a home video of the concerts. (The wildly varying picture quality of the film betrays this as well.)