Inherit the Wind
(4) Base Camp
Inherit the Wind uses pretty down-to-earth dialogue, and it's about a topic that's familiar to most people—evolution, and whether or not it should be taught in schools. So, unless you've been living under a rock for most of your life, you'll have plenty of mental energy left to really take in what's important: the philosophical and judicial debates.
These discussions can get kind of heavy. So focus in on the most important themes of the play, and you'll be golden.