Tonight (Fri, 7/25) at 10 PM, members of the Dramatis Personae theater collective will pull names out of a hat. Tomorrow at 10 PM, the six teams of actors, directors, and playwrights formed by that random process will perform the ten-minute plays they devised over night. That's the 24 Hour Project in a nutshell. 

Tonight's kick-off show at Gorilla Tango Theatre features comedian Brian O'Sullivan and the "audience will be responsible for creating the prompts to start each of the plays." Then, of course, the six-play pay-off comes tomorrow. 

Fri-Sat, 7/25-26, 10 PM, Gorilla Tango Theatre, 1919 N. Milwaukee, 773-598-4549, $15 per show.