How can you make the Dark Knight just that much more awesome? Simply
add a little Neil Patrick Harris - that's right, in the new TV cartoon, Batman: The Brave and the Bold, NPH plays the Music Meister, who can control people by singing.
The result is a whimsical Batman musical, titled Mayhem of the Music Meister (series producer James Tucker described that the "plot itself is just a framework, an excuse to have everybody sing!" Every Batman episode should be like this! Link [embedded YouTube clips]