Landless Theatre Company presents one of the first professional stage productions of the YouTube video miniseries Dr. Horrible's Singalong Blog, developed by Joss Whedon (Buffy The Vampire Slayer) during the Writer's Guild strike a few years back and originally starring Neil Patrick Harris. Landless's Andrew Lloyd Baughman has adapted the musical for the stage. It stars Charles Johnson in the lead role, with his nemesis Captain Hammer played by Clay Comer, the strapping star of last month's TarXXXanadu. To March 27. District of Columbia Arts Center (DCAC), 2438 18th St. NW. Tickets are $25. Call 202-462-7833 or visit landlesstheatrecompany.org.