This musical has an offbeat premise: gay actor-director Nick sets out to create a spoof of Alexander the Great–and gets the real Alexander as his leading man, onstage and off, when the Macedonian conqueror returns from the underworld. Librettist Stephan deGhelder has done his research–the script and lyrics are packed with historical references and theater trivia. But the show is undone by coarse double entendres, lame camp humor, swishy stereotypes, sentimental cliches, and a callow, unconvincing portrayal of Alexander, by newcomer Graham Kurtz. (Oddly, given Bailiwick’s reputation and the story’s classical Greek motif, David Zak’s staging contains no nudity.) On the plus side: an appealing, honest performance by Jason Bowen as Nick; John Cardone’s well-timed comic turn as a bitchy actor who covets Alexander’s, um, part; and a tuneful if derivative score, composed by Brad Simmons in the idiom of Rodgers and Hart. Through 8/14: Wed-Thu 8 PM, Sat 6 PM, Sun 4 PM. Bailiwick Repertory, Bailiwick Arts Center, 1229 W. Belmont, 773-883-1090. $25-$30.