Petaluma School of Ballet performs “The Nutcracker,” the ultimate North Bay Christmas dance extravaganza, Friday Dec. 9 through Sunday Dec. 11 at Person Theater, Sonoma State University in Rohnert Park. Performances are at 7:30 p.m. Friday, 1:30 and 6:30 p.m. Saturday, and 1:30 p.m. Sunday. Tickets are $24, $12 for children, students and seniors, $1 more at the door. For details, contact Ann Derby at 762-3972, petballet110@yahoo.com or petalumaschoolofballet.com.