So I've been rewatching
Baccano, and I had forgotten how lame the
ED was. Seriously, ugly CG tracks, floating heads, and a standard pop ballad out of tune with the rest of the show - ick. Fortunately, the
OP is brilliant enough to make up for that. This is the best "loads of characters" OP out there, because instead of just showing stills of all the characters lounging around somewhere, it comes up with a way to show them all off in action that succinctly expresses their personality, and creative visual transitions between them. It's also smart enough to recognize who the two best characters are, and make sure they get proper attention both at the beginning and the end.
As for the show itself, some of it hasn't aged well, mostly some mediocre digital backgrounds and CG, but it generally looks pretty good. There's some really nice action animation, such as the shootout in the first episode, or the punching scene in the fourth episode. The overall conception and direction of the show is incredible; this must be the deftest handling of a large number of subplots in anime. It keeps leaping around across time and space, across the intersecting pasts of a host of different factions and characters, yet it never becomes incoherent and is always driving forward towards its goal. Well, the first episode is kind of crazy, but it's easy to follow now that I know what's going on.