As one-man shows go, Jim Brochu’s Zero Hour is as traditional as they come: a tribute to a famous person—in this case, the great comic actor Zero Mostel, who died in 1977—in which the subject, near the end of his or her days, looks back at a life both well and nearly spent. Full Gallop, Thurgood, Tru, Occupant and many other plays have traveled this dramatic path before. But not every solo show need be an aesthetic innovator, and Brochu’s tribute to Mostel, directed by Piper Laurie, does exactly what it sets out to do: Brochu’s explosive performance makes the most of Mostel, and proves wildly engaging even as it educates the audience about the trials and triumphs of the outsize showman. We were swept up in Brochu’s merry wake when we reviewed the show in its current incarnation at the Theatre at St. Clement’s, where it closes on Sunday, January 31, and are delighted with the news this week that Zero Hour will transfer to the DR2 Theatre in Union Square for an open-ended run, starting February 24. If you haven’t seen the show yet, head to Telecharge soon—tickets for the DR2 run are scheduled to go on sale later today—and make a date with a Broadway legend.