Holy Musical Batman/Awesome

• When the entire Justice League show up during the final song! Also doubles as a Crowning Music of Awesome when they sing in harmony.
• At the finale, Superman flies around the world to turn back time (both a Brick Joke and a shout-out to one of his movies), and then hurls Sweet Tooth's warheads into the sun, after Batman called him to apologise and ask for help.
• Say it with me, folks: "I'm the God. Damn. BATMAN!"
• To Be a Man. Superman fighting Batman. In song. It's as glorious as it sounds.