Yes... it's an iPhone app

The iPhone app store has, as most us are aware been a great place for niche and unnecessary, and sometimes helpful applications. One of these sometimes helpful apps is RunPee: a program which tells the user when it is the most opportune time to go to the toilet while watching a movie. 

It hosts a library of thousands of movies, including up-to-date new releases, and basically provides you with information of the times of the biggest lulls, when there are fewest story points or pauses in the action. Anyone with a bladder as small as mine will find this extremely helpful, as now I don't go back in the cinema with my friends saying "oh you missed the best bit!" when going to the toilet during Semi-Pro.

It has also shown me a bit more of how the structure of most movies work; there is always a lull a bit after the middle when the character is down on his luck at the end of the second act.