Montana Repertory Theatre marks its 50th anniversary with a one-night Helena performance of Neil Simon’s “Barefoot in the Park” Wednesday, Jan. 21 at 7:30 p.m. at the Myrna Loy Center. Tickets to “Barefoot in the Park” are $22 or $16 for students, and are available at the Myrna Loy Center, 443-0287 or online at myrnaloycenter.com.