Shakespearean conceits are writ large in Michael Govier's amusing play for Chemically Imbalanced Comedy. Borrowing from Macbeth, Hamlet, and A Midsummer Night's Dream and incorporating musical theater, puppetry, and burlesque elements, this frothy farcical work isn't always original, but it remains good fun. A committed cast energetically sells the silliness in Govier's elaborate plot, as thwarted young lovers both straight and gay, a greedy king, a lusty queen, witches, and amateur thespians fall into a morass of mistaken identities, murder attempts, and accidental stabbings. Toby Minor's cowed servant is an ideal counterpoint to Don Hall's boldly confident king, Adam Cook is hilarious as the immature prince, and Curtis Williams is perfect as an actor crazy for death scenes. Through 10/28: Fri 8 PM. Cornservatory, 4210 N. Lincoln, 773-865-7731. $10.