I am all over the Big Band Dances at Centennial Park every Saturday night. Yep. Every Saturday night. The danceteria is near the train and festooned with Japanese lanterns and twinkle lights for the summer. The music and dancing starts at 7:30 p.m., but do yourself a fun favor and arrive around 7:00 for the dance class taught by really great instructors from Dance World. Last Saturday was Salsa Night, and this past Saturday was polka night. At every session, the instructors lead wannabe dancers of all ages and ilk, step by step, through the featured dance.