Slapstick fight scenes in every episode. No one actually hurt - it's all choreographed.

Robin's infamous "Holy (insert), Batman!" quote

At least one use of "hell" in the episode "While Gotham City Burns."

Some social drinking and smoking. One recurring villain, The Penguin, usually is smoking a cigarette.

The first two seasons are two parters that are bridged with a cliffhanger, which can range from the genuinely scary to the silly.

This show is very light and comical.