Saturday night moviesThe Gary J. Arthur Community Center offers a monthly movie screening from 6 p.m. to 8 p.m. at 2400 Route 97 in Cooksville. Admission is $4, $2 for center members, and includes popcorn and a drink. Free for children 4 and younger.•July 21: &quot;The Ant Bully&quot; (rated PG)Registration and information: 410-313-4840.Glenwood Senior CenterGlenwood Senior Center, 2400 Route 97, Cooksville, offers the following events. Information: 410-313-5440:SittercizeThe hourlong exercise program includes seated aerobics, stretching and strengthening drills, 1 p.m. Mondays, Wednesdays and Fridays. Cost is $36 for 18 classes.Fit for Life exercisesParticipants do aerobics, strength training and abdominal work, 8:20 a.m. to 9:20 a.m. Fridays. $45 for 12 classes.Painting and drawingA painting and drawing open studio will be held from 9 a.m. to noon Wednesdays. Bring your own supplies. Free.Hatha yogaClasses in this Indian system of physical postures and breathing will be held from 9 a.m. to 10 a.m. Tuesdays and Thursdays. $45 for eight classes.Silver Sneakers Walking ClubThe group is led by a staff member on an indoor track at 8:30 a.m. Mondays through Fridays. Everyone is invited.Shoot poolEveryone is invited to shoot pool from 8 a.m. to 2 p.m. Mondays through Fridays.Senior hoopsPlayers are welcome at 9 a.m. Mondays, Wednesdays and Fridays.