If you are willing to get wet and spend a little money for the privilege, the best water playground in the Dallas area is in North Richland Hills. NRH20 has something for everyone, priding itself on a safety rating system that identifies which rides are appropriate for which age category. Low speed is for shallow-water attractions and shallow-water kids. High speed is for the more skillful swimmer, someone who can navigate the new Green Extreme, a seven-story-tall water slide with 1,161 feet of twists and turns. The thoroughly modern water park has one holdover from days gone by: an outdoor "dive in" movie on Friday nights throughout the summer, where kid flicks like Shrek and Harry Potter and the Sorcerer's Stone can be seen while floating in the wave pool or relaxing in a lounge chair on the beach. Well, a simulated beach anyway.