In English I like: Suits, White Collar, Criminal Minds, Doctor Who, Supernatural, Grimm, Law and Order: Criminal Intent, Torchwood, Chuck, and various other shows.
In Japanese (you can find these with English subtitles btw) I like: Liar Game, Keizoku 2: SPEC, Boys Over Flowers/Hana Yori Dango, Code Blue, Tokyo DOGS, BOSS, Empress/Jotei, Yankee-kun and Megane-chan, and various other dramas including the live action adaptation of the anime and manga: Ouran High School Host Club.