The Dells Theatre is worth a drive from Sioux Falls. The theater shows popular newly released films on its one screen for a very great price--currently $4 for those 12 and over and $2 for matinées and the Tuesday night "bargain show." Concessions are inexpensive as well.
The building itself is interesting architecturally, and one of its greatest features is a sound-proof room just outside the women's restroom, perfect for stepping out with cranky toddlers. A large picture window and speaker system allow moms to continue to watch the show without disturbing other viewers.