You know what I might have liked more than the Daredevil film? The "making of" documentary that was included in the DVD. I've watched that a few times, and it's kinda fascinating. You can't help but like Mark Steven Johnson from watching that, and seeing all the studio crap and interference he had to put up with ("Does he have to dress like a devil?"), and just how much love and passion he had for the whole thing. You can tell he's a huge fan of the character, that this is essentially his childhood dream come true, and you sooooo wish that with all the love he poured into it that the end product was a great movie rather than just an okay one.
And Ben Affleck, too, you gotta respect the guy when you see how much he just got his ass kicked. Watching him do that tortuous head/whole body casting at the beginning, then him going through the fight training. They have the experts in talking about how he was not a natural learner (Jennifer Garner, on the other hand, took to it like a duck to water and was easily the best out of anyone, apparently), but he worked his ass off to get it right. There's this one sequence that shows him doing the same wirework stunt over and over and over and over, and he keeps on missing the mark, or slipping off, or going swinging and ramming into a wall. There's so much stuff in that, it shows how up against it everyone was in getting this film made.
And, to bring it back on-topic, there's a lot of interesting stuff that goes into the thought process behind making the costume, and some glimpses of other, more radically different interpretations that they did tests for.