The annual Witchie Poo Halloween Extravaganza marks its 35th year and always features family-friendly variety acts filled with ghosts, ghouls and spooks. This year, superheroes will join the monsters, as the Witchie Poo Players take on the theme of a comic book convention for their delightfully demented performances. Look out for a dance routine from the Batman Tappers as well as the intermission costume parade, where those dressed in their spooky best can win frightfully fun prizes. The Witchie Poo Extravaganza scares up a good time on Saturdays and Sundays, Oct 17–18 and 24–25, at Sebastiani Theatre, 476 First St. E., Sonoma. 2pm. $9–$11. 707.996.9756.