Well, everytime I think of Batman I recall this particular design.
It really got me involved and introduced me to the Batman universe, the art style is particularly superb and the character design it's just awesome. The animation it' s also really good, still holds up to these days. The joker, Harley Quinn and Two faces are my favorites. I also enjoyed playing with the animated batman skin in Batman Arkahm city.
Although I watched it several years before the original release on. It was new to me, and I enjoyed it a lot.
And that intro still kicks ass xD