Borders Columbus Circle at the Time Warner Center has announced an updated calendar of events.

The cast and creators of Cirque du Soleil's Zarkana, now appearing at Radio City Music Hall, will participate in a discussion (Monday, June 27, 7pm); author John Anthony Gilvey and guests Charles West and Randee Mia Berman will discuss the new book, Jerry Orbach: Prince of the City (Monday, July 18, 7pm); and cast members from the upcoming Broadway production of Hair will perform and take part in a book signing with Eric Grode, author of Hair: The Story of the Show that Defined a Generation (Tuesday, July 19, 5pm).

For more information, call 212-823-9775.