Of course, the other heavy hitters in this field -- Halloween, Friday the 13th, and A Nightmare on Elm Street -- were mostly released in the 1980s, when movie tickets were a lot cheaper. It's no surprise that a franchise launched in the 2000s would be more lucrative. Still, Saw has made its loot in just five films, compared to Elm Street's eight (including Freddy vs. Jason), Halloween's nine (including last year's remake), and Friday the 13th's eleven (including Freddy vs. Jason again).
A curious fact: Prior to this weekend, the race was surprisingly close. Box Office Mojo has the Friday the 13th series at $315 million, Elm Street at $307 million, and Halloween at $275 million. (Lionsgate's press release touting the Saw achievement has the Halloween series at $307 million, but I don't know where they're getting that from.)
But Jigsaw shouldn't rest on his laurels just yet. The Friday the 13th reboot due in February is liable to put Jason Voorhees in the lead again, although that will be short-lived if the seemingly inevitable Saw VI does indeed appear next October. If the Friday remake is successful, though, it could lead to more sequels and more competition. Personally, I'd rather have a mute, hockey-masked punisher as the all-time box office champ over a cancer-brained faux-intellectual who can't shut up. But that's just me! You can vote however you want. In the meantime, congrats to Saw for out-grossing Freddy, Michael, and Jason, and congrats to me for not making a pun on the word "grossing."