Intiman is unveiling the most thrilling high-wire act of the summer—a festival of four shows by one team of actors and designers, running simultaneously. Dirty Story directed by Valerie Curtis-Newton opens tonight, and Miracle! (an original drag musical about Helen Keller directed by Dan Savage) is in previews (it officially opens Saturday). Meanwhile, Hedda Gabler directed by Andrew Russell opens Thursday, and Romeo and Juliet directed by Allison Narver opens Friday. Will they soar or fall on their asses? Go and see. (Intiman Theatre, 201 Mercer St,, Dirty Story 7 pm, Miracle! 8 pm, $30 per show)