One of the cool things about Batman: The Brave & the Bold on Cartoon Network is that the producers have been willing to go the extra mile in terms of fanservice.
One such example comes in the episode, "Batmite Presents: Batman's Strangest Cases", which allows the producers a chance to pay homage to the Caped Crusader's two previous meetings with the teens of Mystery Incorporated on The New Scooby-Doo Movies nearly 40 years ago. In this flashback, Frank Welker pulls triple duty, as he subs for Diedrich Bader as the voice of Batman, in addition to his regular roles as Fred & Scooby. As was the case back in 1972, the Joker & the Penguin provide the opposition, plus, in a total homage to the series proper, song satirist Weird Al Yankovic is added to the mix.
Edit: 4/9/14: Unfortunately, the original video was deleted by YouTube due to copyright concerns. All we have now is a "Weird" Al-less teaser.
Admittedly, I wanted to post this sooner, like, around Halloween, but never got to it in time. Trying to compress a 1 hour drama into 8-9 minutes, though, isn't my cup of tea. Take it however you wish.