B:TB&tB season 2 episode 25 "Bat-Mite Presents: Batman's Strangest Cases!" Directed by Ben Jones.
This was originally going to be final episode of "Batman: The Brave and the Bold", but the toy company came in towards the end of the second season and gave money for a third and final season. Ironically, we gave the toy company a playful jab in the final episode of season three (all jokes aside, we were thankful for the chance to do another 13 episodes).
Since this was originally going to be the final episode, the show was to "go out weird" and do some homages of lesser known Batman appearances. We did a Mad Magazine one, and a Scooby Doo one, but what was the third one going to be? Towards the beginning of production of season one of B:TB&tB, Chip Kidd's awesome collection of Jiro Kuwata's Bat-manga came out called "Bat-Manga!". A few of us color xeroxed some of the pages and had them hanging up around the office. "Wouldn't it be cool if we got to put some of this in the show"? A season later we did just that.
In between the segments, Bat Mite is featured in a live action environment. The book seen here was keyed by Craig Cuqro and I added texture to it. This was handed off to be texture mapped on to a CG model. This what it looked like when it was all put together (if you blink you will miss it):
"Batman: The Brave and the Bold" ™Warner Bros. Animation.