Pittsburgh Children’s Theater will present “Alexander, Who’s Not Not Not Not Not Going to Move” at 2 p.m. Sunday at Seneca Valley Intermediate High School. Tickets are $10.50; a free pass is available for children 2 and younger. Call 412-456-6666.

Comtra Theatre, Route 19, Cranberry Township, presents the musical “Rocky Horror Show” through Oct. 31. Curtain is at 7:30 p.m. Fridays and Saturdays. Doors open at 6:30 p.m. Tickets are $15. Visit www.comtratheatre.org or call 724-591-8727.