Need something to do this weekend? Try this event in Chandler. The Mesquite Groves Aquatic Center, 5901 S. Hillcrest Drive, will host a dive-in movie and show “Finding Nemo” 8 p.m. Saturday, Sept. Doors open at 7:30 p.m. Everyone is invited to come and enjoy a movie under the stars with your family. Bring your own floatation device and relax in the cool waters, or just sit nearby on the pool deck.