It was a triumphant weekend for Michael Jackson. And how fitting it was that the man who gave us the Thriller masterpiece saw victory during a weekend devoted to all things Halloween.

According to early estimates at Box Office Mojo, Michael Jackson's This Is It, distributed by Sony (NYSE: SNE), grossed about $21 million at domestic theaters, good for the top slot. The total tally for the film is over $32 million once the Wednesday opening is taken into account.

I don't believe it. I never thought it could happen. Lions Gate Entertainment (NYSE: LGF) released Saw VI this past weekend. Surely the latest cinematic celebration of cruelty would be the number-one picture at domestic theaters, right? Saw is a big brand when it comes to torture movies. Jigsaw is a Freddy Krueger (and beyond) for the new generation. The teens would be out in full force to support all the latest traps and sequences of dismemberment and bloodletting for sure.

Well, Saw VI didn't come out on top. Instead, Viacom's (NYSE: VIA) Paranormal Activity made the most money in the race for domination at the multiplex, scoring approximately $22 million according to early estimates from Box Office Mojo. The new Saw did come in second, though, so that was at least some consolation, correct?

Time Warner's (NYSE: TWX) Where the Wild Things Are was number one over the past weekend at domestic theaters as of early estimates from Box Office Mojo. The film grossed well over $30 million. Coming in second was Law Abiding Citizen. If Wild Things wasn't in the market this weekend, that one definitely would have been tops at the multiplex. The revenge fest, from Liberty Capital Group's (NASDAQ: LCAPA) Overture Films, brought in $21 million.

Right on the heels of that project is the very cheaply made Paranormal Activity, courtesy of Viacom (NYSE: VIA). It made about $20 million. So far, Activity has generated over $30 million in total. And they say the little horror extravaganza cost less than $20,000 to produce!

General Electric's (NYSE: GE) studio division didn't have a great summer at the box office. This past weekend, though, the company's new comedy made waves at the box office.

According to Box Office Mojo, Universal's Couples Retreat, starring Vince Vaughn, took in about $35 million at domestic theaters as of early estimates, more than enough to capture the top slot. Sony (NYSE: SNE) took the next two spots on the chart with Zombieland, and the resilient cartoon Cloudy With A Chance of Meatballs, respectively. Don't get too cocky, though, Sony, because Disney (NYSE: DIS) was right behind you with its Toy Story 3D special release.