I thought the Two-Face two-parter was interesting as hell , it was was also very well done , the fact they made it more mature than other episodes was the right way to deal with it , plus the change to Two-Face was not just "oh my face is damaged now i'm two face" but showed it was something that was always inside him but the accident helped bring it to the surface was just brilliant
The two face two parter is one of many reasons I say the early batman series
(before adding robin) Is better than any other timmverse series