Mr. Brain

Mr. Brain is a Japanese television comedy drama aired on TBS in 2009.

Sypnosis by TBS (retrieved from wiki.d-addicts.com):

Tsukumo Ryusuke is a quirky, yet brilliant neuroscientist working for the National Research Institute of Police Science. Wielding a unique perspective and psychology, Tsukumo tackles the nation's most baffling crimes and scandals, going head-to-head with the most brilliant and twisted criminal minds. But his eccentricities and poor social timing can also aggravate people and circumstances, further complicating matters.

This show provides examples of:

 * Amateur Sleuth: Tsukumo, who tends to get chastised by his boss for not concentrating on his "research".
 * Ax Crazy: Kanako in her "Shunsuke" persona.
 * Batman Gambit:
 * Tsukumo relies on the culprits' "natural reflexes" (caused by their brains) to expose them.
 * The culprit's schemes in the last two episodes.
 * Big Eater: Kanako in her "Shouko" persona.
 * Bunny Ears Lawyer: Tsukumo, a brilliant and eccentric neuroscientist.
 * Butt Monkey: Kazune.
 * Catch Phrase: "My name is Tsukumo, written as 9-10-9 in kanji numerals."
 * Chaste Hero: Due to partial brain damage caused by an accident, Tsukumo is totally clueless about Kazune's advances on him, and keeps wondering why he's in possession of a porn magazine in the first place.
 * Everyone Calls Him Barkeep: The cleaning lady.
 * Exactly What It Says On the Tin: The show has some very specific episode titles, including:
 * "Eccentric Neuroscientist vs. Beautiful Revived Ghost!!"
 * "Invisible Man Setting Up Serial Murders!!"
 * "Eccentric Neuroscientist vs. Beautiful Woman With A Split Personality!!"
 * Expy: Takegami is a manipulative cannibalistic murderer like Hannibal Lecter.
 * Fragile Flower: Kanako's original persona.
 * I'm a Humanitarian: In the second episode, Gackt's ham-tastic character Takegami Teijirou is a cannibalistic serial killer who considers eating human flesh to be the equivalent of eating beef or pork.
 * Insufferable Genius: Even though Tsukumo Ryusuke usually figures out the crimes long before anybody else, he is still considered insufferable by many of his superiors.
 * Giggling Villain: Takegami Teijirou.
 * Kids Are Cruel: Kanako's classmates ridiculed her request for accompanying her home, resulting in her kidnapping.
 * Large Ham: It's obvious Gackt is having a lot of fun playing a cannibal.
 * My Name Is Not Durwood: Detective Hayashida is frequently called "Rinda" by Tsukumo.
 * No Social Skills: Part of the reasons why many other scientists dislike Tsukumo.
 * Not My Driver: Happens to a victim in Episode 7.
 * Obviously Evil: Takei, who's bald and is frequently seen with a smug smile on his face..
 * Posthumous Character: Takegami Teijirou.
 * Psychotic Smirk: Takegami loves to sport this.
 * Real Song Theme Tune: "Jump" by Van Halen.
 * Roaring Rampage of Revenge: Some of the culprits.
 * Shrinking Violet: Yuri Kazune, although she does have a few moments of assertiveness. Not that anybody listens to her when she does, though.
 * Split Personality: Akiyoshi Kanako suffers from this after being kidnapped and imprisoned for 15 years..
 * Trademark Favorite Food: Tsukumo has his bananas.