Frontier Town is pure 19th Century awesomeness and serious bang for the buck. Frontier Town as a whole offers camping, ropes courses, mini-golf, a water park, and western theme park (called The Wild West Show on their website). This review only addresses the theme park there.
$15 gets you cowboy shoot-outs, Indian dances, horse riding stunt shows, Can Can dancers, bank holdups and jailbreaks, stagecoach, steam train, and paddle-boat rides in a Wild West frontier town. It's scheduled so that you don't have to choose, you can see them all with plenty of time to meander between happenings. The Indian dancers and Best of the West stunt show are not to be missed. Also don't forget to take a stagecoach ride (it's free once you're in the gate).