Out of the 3 anime (Moyashimon, Black Lagoon, and this, Durarara) I caught at Wednesday Anime when I was in Cambridge last week (and that I've been keeping up with this week too), this is my favourite. As with all the other anime, I've come in some way through the series, and I've only seen episodes 15-18 so far, but I'll be watching this from the beginning for sure!!
I love it!!
And I also love that Mamoru Miyano voices Masaomi Kida!! XP I'd suspected it, but it only became clear when he was being an idiot!! XD