A middle-aged African-American mathematics professor (Rob Cleveland) suffers an identity crisis that coincides with the 1995 Million Man March in BLUE DOOR, a two-man drama by Tanya Barfield, continuing Thurs., FEB. 28, at Theatre in the Square's oft-edgy Alley Stage. Co-starring Eric Little and directed by Gary Yates, Blue Door features songs, intimations of the supernatural and questions of African-American history and authenticity, which may speak to issues raised by Barack Obama's presidential candidacy. Alert Creative Loafing readers may remember Cleveland's profile in our Jan. 30 cover story on professional storytellers. Through March 16. $15-$20. Tues.-Fri., 8 p.m.; Sat., 2:30 and 8 p.m.; Sun., 2:30 p.m. 11 Whitlock Ave., Marietta. 770-422-8369. www.theatreinthesquare.com.