I've never seen a more perfect depiction of Harvey outside of this show and the Dark Knight. This is how you do the character correctly, unlike most of the other episodes in the first season this story arc tackles a subject that you wouldn't expect any other show to tackle at the time. This isn't just some generic "oh he acts mean and dangerous when he's not himself" shtick no no no no, you actually DO feel how dangerous and spine-chilling his other self can be, I don't think there's any other version of Two-Face that tried this and it works perfectly here. Plus they managed to make Harvey likable enough to make himself still seem like a great character, so when half his face gets blown off and he becomes his inner-demon, you can't help but feel sorry for him. This and part 2 of this story arc are perfect examples of what makes Batman: The Animated Series such a special show, the day the show and these episodes were formed was the dawn of a new day, where Batman proves that he's not just cheesy nonsense from the 60's.