It’s one of those under-the-radar theater companies that more people ought to know about: Graham Sobelman is hosting cabaret acts at the Geery Theatre. Those in the know have seen local actors such as Kevin Caravelho and Joelle Wirth, who performed a show they called Two Stuck-Up Bitches on March 8, and Courtney Glass and Connor Mickiewicz put on a wedding medley on March 1. Melinda Parrett and T. Patrick Van star in Wig in a Box this Sunday, March 22, at the Geery Theatre, 2130 L Street. Performances are at 7 and 9 p.m. and tickets are $15. For more information, see the Web site: