Cabaret, Drury Lane Oak Brook, through Oct. 11.
Without explicitly mentioning it, the Holocaust looms around the dark edges of Jim Corti's masterful take on Kander and Ebb's brilliant musical. Moreover, the cast absolutely gets the horror just under the debauchery of Weimar Era Germany. CS
The History Boys, TimeLine Theatre, through Sept. 27.
Two teachers fight for the hearts and minds of eight bright British boys bound for Oxford or Cambridge in a dazzling examination of education, with a gay subplot. Now extended, maybe you can score tickets. DO try! JA
Poseidon: An Upside Down Musical, Hell in a Handbag Productions at Chopin Theatre, extended through Sept. 27.
This camp comedy may capsize when shifting from movie spoof to the film's obsessive fans. Yet those moments are rare in this silly musical that both edifies and eviscerates the classic 1972 disaster flick The Poseidon Adventure. SCM
The Ruby Sunrise, Gift Theatre, through Sept. 27.
Rinne Groff's speculative fantasy on the hidden story behind the invention of television has extended, giving us another chance to recall the promise and hope that accompanied the birth of that much-maligned medium. MSB
By Abarbanel, Barnidge
Morgan and Sullivan