I've often pointed out in the Box Office Power Rankings when I've thought a movie had a poor release strategy, and in that spirit I have to wonder why Tyler Perry's movies are still only being released at 2,000 sites. His last five movies have opened in about that many theaters, and their first-weekend grosses have ranged from $17 million to $41 million.

The worst performer among those movies earned nearly $8,400 per theater in its opening weekend, which is just a hair shy of what The Day the Earth Stood Still did in its debut. The new Tyler Perry's Madea Goes to Jail topped $20,000 per theater, better than anything since Milk the last weekend of November and barely eclipsed by Twilight in its first three days. Give Tyler Perry some damned screens!

Rotten Tomatoes has a feature called "Average Tomatometer by Year," and the default screen for Renée Zellweger looks grim. From 2005 to 2009, her score drops for two years (from 80 to 52), recovers a little (to 64), and falls off a cliff (to 19).

This is completely meaningless, of course. If you expand the time frame, the line jumps up and down mercilessly. If you've ever heard of the trouble with a "small sample size," this is prime evidence, with most actors being in one or two movies a year. And Renée is but one person in movies containing (and made by) multitudes.

Still, there's the sneaking suspicion that Ms. Zellweger is on a downward trajectory. Her latest, the romantic comedy New in Town, finished in last place in our Box Office Power Rankings (won by Slumdog Millionaire), and new releases only landed in that spot eight other times over the past year. Entertainment Weekly's recent "Recall the Gold" survey wanted to steal her Oscar for 2003's Cold Mountain.

A reliable rule for critical aggregators is that Rotten Tomatoes will almost always be a more extreme number than Metacritic. Put another way, the Metacritic number will generally sit between the Rotten Tomatoes number and 50. This is a function of the up-or-down Rotten Tomaotes system compared to the shadings allowed by Metacritic. (A three-star review is fully positive to Rotten Tomatoes, but only three-quarters positive to Metacritic.)

There are so few significant exceptions that it's worth noting when they crop up. In this week's Box Office Power Rankings (won, for a second consecutive week, by Gran Torino), there are two: Notorious and Defiance. They both scored 52 at Rotten Tomatoes and significantly higher (61 and 58, respectively) at Metacritic.

In last week's Box Office Power Rankings, The Curious Case of Benjamin Button finished two points ahead of Marley and Me. They were third and first, respectively, in overall box office, and one point apart in the per-theater standings.