Blue Man Group, continuing its open run at Chicago’s Briar Street Theatre, has announced a special appearance at the 29th anniversary performance of Milly’s Orchid Show: 29 Years and Holdin’ Saturday, July 29, at Park West. The variety show created, produced and hosted by Brigid Murphy, as Milly May Smithy, will star several other acts, including superstar band Expo’76, Karol Kent’s Cubs Trilogy, Wendy Clinard & Company Flamenco Dance, Paula Killen, Marc “Poetry Slam” Smith, Robert Cornelius, Hip Hop in Tutus by K-Phi-9, Consuelo Allen’s country Shakespeare as Willy May, Magda Krance & Co., Heather McAdams’ “Film Time,” a special letter from David Sedaris, Coal Diggers, the Snack Seat and more.