NBC has announced that it will preview “About a Boy,” Jason Katims’ comedy based on the Nick Hornby novel, and “Growing Up Fisher,” DJ Nash’s comedy starring J.K. Simmons and Jenna Elfman, during its Olympics coverage.

“About a Boy” will preview at 10:30 p.m. February 21 following coverage of the Olympic games, while “Growing Up Fisher’s” preview follows the Closing Ceremonies at 10:30 p.m. February 23. There will be a repeat airing of both shows’ first episodes after “The Voice” on February 25.

Alfonso Cuaron and J.J. Abrams’ suspense drama “Believe” will air at 9 p.m. March 16. The Gillian Anderson and Dermot Mulroney drama “Crisis” will follow it. “American Dream Builders,” the reality competition show hosted by Nate Berkus, premieres at 8 p.m. March 23.