(1 of 7) Broadway Stars Turned SuperstarsLong before they became famous on the big and small screens, these lovely ladies were stars of the stage. Whether acting in dramas or tap dancing in musicals, these seven Broadway babies always deserve a standing ovation. Megan Mullaly Mullally perfected her over-the-top presence before taking on the quirky role of Karen Walker in the hit TV show Will & Grace. She starred in the Broadway productions of Grease and How to Succeed in Business Without Really Trying.