Just re-watched episode 4, it has absolutely everything in it you would want from a comic book property like this. The great scene between Matt and the Priest at the start about guilt, DD getting his new suit, a really under-rated bad guy who shows how brutal he is from the get go, Frank at the carousel and following shoot-out, the torture scene and Frank's revenge on his captures and as if thats not enough you get that awesome gut wrenching monologue from Frank that explains exactly why he is what he is and that TDK-esq ending to just top it off.
I needed a lie down after that episode, it was just too many emotions. Without doubt my fave episode over both series, perfect action and character moments blended together.
I sort of wish it was the final episode it would have been the perfect ending.