The site lists movies currently in theaters and suggests scenes during which you could run to the restroom for a four-minute break without missing anything substantial. For example, let's say you're watching the latest Harry Potter movie and feeling the need. Runpee (which almost sounds like the name of a character in the movie) suggests you hold on until minute 33, at which point 'Dumbledore says, `Off to bed, pip-pip.'' Or, the site suggests, you could wait until 1 hour and 47 minutes, when 'Harry invites Professor Slughorn to go and see Hagrid with him.' Those are your cues to head for the head. Later, if you want to check out what happened during the scenes, you can click to unscramble a synopsis. At the moment, the site also is offering suggested restroom break times for 'Funny People,' 'Bruno,' the latest Transformers movie and others. If you don't plan ahead, it might be inconvenient to carry a laptop into a theater and hope for wi-fi. No worries. Runpee has an iPhone app. The site's creator, Dan Florio, says on Runpee's FAQ that he's working on adaptations for other cell phones. The site does not display much commercial support. There are a few Google-generated ads, and a bit of merchandising, including T-shirts and coffee mugs inscribed with the Runpee logo. Let's just hope Runpee doesn't get too popular. Otherwise there might be a mass run to the restrooms right at the pointin 'Land of the Lost' when Dr. Marshall talks to the space lizard. That is, if anyone gets that far into the movie. If nature calls in an empty theater, does anyone hear? 