A very funny kids’ show based on the popular series of books that, mercifully, entertains adults as well. SN&R’s 9-year-old guest reviewing twins gave it “three thumbs up” (math isn’t a strong point), and the adult critic laughed out loud. Sa, Su 1pm and 4pm. Through 12/31. $15-$22. B Street Theatre, 2711 B St.; (916) 443-5300; www.bstreettheatre.org.