Megan Mullally and Patton Oswalt are poised to star in Terrence McNally’s Broadway production of Lips Together, Teeth Apart. The show, which will be directed by Joe Mantello, will officially premiere April 29, 2010 at the American Airlines Theatre, with performances beginning April 9, 2010. The limited engagement will end June 20, 2010. Lips Together follows two siblings and their spouses who spend Fourth of July weekend together on Fire Island. Other cast members will be announced shortly.