Durarara!!

In Tokyo's downtown district of Ikebukuro, amidst many strange rumors and warnings of anonymous gangs and dangerous occupants, one urban legend stands out above the rest—the existence of a headless "Black Rider" who is said to be seen driving a jet-black motorcycle through the city streets. Ryuugamine Mikado has always longed for the excitement of the city life, and an invitation from a childhood friend convinces him to move to Tokyo. Witnessing the Black Rider on his first day in the city, his wishes already seem to have been granted. But as supernatural events begin to occur, ordinary citizens like himself, along with Ikebukuro's most colorful inhabitants, are mixed up in the commotion breaking out in their city. (Source: MAL Rewrite)

Samurai Champloo

Let's break it down. Mugen's a reckless sword-slinger with a style that's more b-boy than Shaolin. He's got a nasty streak that makes people want to stick a knife in his throat. Then there's Jin, a deadbeat ronin who speaks softly but carries a big blade. He runs game old-school style, but he can make your blood spray with the quickness. When these roughnecks bring the ruckus, it ain't good for anybody, especially them. Enter Fuu, the ditzy waitress who springs her new friends from a deadly jam. All she wants in return is help solving a riddle from her past. She and the boys are tracking the scent, but there's 99 ways to die between them and the sunflower samurai. (Source: Funimation)

Mad Bull 34

Daizaburo Edi-Ban, a Japanese-American, joins New York City's toughest precinct, the 34th. On his first day he is partnered up with John Estes, called Sleepy by his friends and Mad Bull by his enemies, a cop who stops crime with his own violent brand of justice. Mad Bull makes no qualms about executing common thieves with shotgun blasts if they even pose a minor threat to him or anyone around them. Mad Bull also often steals from prostitutes and does incredible amounts of property damage while fighting crime. Mad Bull's unpoliceman-like behavior often puts him in hot water with his partner Daizaburo and the 34th precinct. However, despite how reckless or illegal these acts are, a good cause is always revealed (For example, Sleepy uses the money he steals from the prostitutes to fund a venereal disease clinic and a home for battered and raped women). Perrine Valley, a police lieutenant, joins Daizaburo and Sleepy later on to help them tackle more difficult cases involving the mafia and drug-running. Mad Bull 34 is inspired by the high-action buddy cop films of the 70's and 80's. - Thevinnymac, the badass from Ignition-One