Janos Horvath, Tristan Tapscott, Bret Churchill, Elizabeth Miller, and Sara Nicks in Go, Dog. Go!Clocking in at just under 50 minutes at the opening matinée, the Circa '21 Dinner Playhouse's (under) 21 Youth Theatre's adaptation of Go, Dog. Go! is a great opportunity for preschool and early school-aged kids to experience their first local-theatre production. (In retrospect, I could've even taken my 20-month-old daughter, along with a Snack Trap and three refills of Cheerios.) The show features a series of simple vignettes plucked from the pages of P.D. Eastman's 1961 children's-book classic about the friendship between six adorable canines. And while the general lack of dialogue or a steady plotline may bore some adults, the rudimentary yet whimsical scenes and characters will likely appeal to the under-10 crowd.