David Annen (left) and Paul Bhattacharjee play G.H. Hardy and Srinivasa Ramanujan, two mathematicians who inspired Simon McBurney's A Disappearing Number. Robbie Jack hide caption

itoggle caption Robbie Jack

In Charenton, the Marquis de Sade directs a play-within-a-play about the French Revolution, performed by inmates of the Charenton Asylum, including Antonieta, a young baker fixated on Marie Antoinette; Napoleoncito, a young actor fixated on Napoleon; and Juana, a girl who believes she is Joan of Arc. Diana Taylor/Hemispheric Institute of Performance and Politics hide caption

itoggle caption Diana Taylor/Hemispheric Institute of Performance and Politics

Actor Danny Kaye (left) clowns around with composer Frank Loesser while rehearsing a song for the 1952 film Hans Christian Andersen. Gjon Mili/Time Life Pictures/Getty Images hide caption

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Frank Loesser won the Academy Award for his song "Baby It's Cold Outside." Stroud/Express/Getty Images hide caption

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Just Dance: Megan Sikora (center) is a member of the ensemble in Broadway's revival of Promises, Promises. Sikora also understudies the musical's lead, Kristin Chenoweth, and featured actress Katie Finneran. Joan Marcus/The Hartman Group hide caption

itoggle caption Joan Marcus/The Hartman Group

The cast of the Broadway revival of Promises, Promises includes Sean Hayes (center) in the role originated by Jerry Orbach in 1968. Joan Marcus hide caption

itoggle caption Joan Marcus

Sean Hayes and Kristin Chenoweth star in a new Broadway revival of Promises, Promises. Hayes says that he's had to overcome "a little added pressure and a little added fear" on stage because of his singing role. Joan Marcus hide caption

itoggle caption Joan Marcus