According to Broadway World, Miriam Margoyles, who plays Professor Sprout in the Harry Potter films,  will make her Broadway debut as Madame Morrible in the musical Wicked, starting January 22. 

Tickets are available through Ticketmaster www.ticketmaster.com.  For more information, visit www.wickedthemusical.com.  Wicked is performed at the Gershwin Theatre, 222 West 51st Street, between Broadway and 8th Avenue.