Welcome to the Box Office Report, where Dawn of the Planet of the Apes swings and Sex Tape goes limp.

1. Dawn of the Planet of the Apes (Fox): $36 million in 3,969 theaters.

Several new flicks were gunning for the top spot this week, but Dawn fended them all of them off by dint of strong reviews, the transition to 3-D, and some Gary Oldman voodoo. This seemed like an unlikely blockbuster, but I guess if the movie's implausible, the results are all allowed to be implausible too. 

2. The Purge: Anarchy (Universal): $28.3 million in 2,805 theaters.

This sequel defied a ton of expectations and performed well, despite middling reviews and a limited release. The story is about a city that gets to enjoy exactly 12 hours of anarchy per year. Sound like something you'd like to watch? Go to a playground, they're free.

3. Planes: Fire and Rescue (Buena Vista): $18 million in 3,826 theaters.

Planes is a sequel to Cars, a kids movie that came out eight years ago and wasn't all that popular to begin with. Pixar apparently wanted nothing to do with it. And so here we are: A $50 million movie will reluctantly make its money back. Parents didn't even seem to like it.

4. Sex Tape (Sony): $15 million in 3,062 theaters.

Cameron Diaz in her umpteenth starring role this year made a movie about a sex tape. Why did it only score $15 million in its opening weekend? First things first, it's a comedy in the era of waning comedies. Second and most importantly, the sex was with Jason Segel. 

5. Transformers: The Age of Extinction (Paramount): $10 million in 3,224 theaters.

Zoom! Crash! Explosion! Explosion! (Awful dialogue.) Robot noises. $886 million worldwide.