Review of Durarara!!

From the mastermind behind 'Baccano!' comes 'Durarara!!' (DRRR!!). DRRR!! has an excelled cast of characters, each with very different and colorful personalities. Mixed with a very good soundtrack and some plot twists, this is a must-see for people who love a heavily story-driven anime sprinkled with some action scenes and a touch of fantasy. With that said, what is this anime about?