There's a very fun "malignant narcissist" (seems more sociopathic) character in the BBC television series Luther. The titular character says this about her: "The way Alice sees it is this world is full of people that have "offended her, embarassed her, let her down, and those people deserve to be punished." The way she is portrayed is very well done -- her moments of quiet reflection, her inappropriate emotional responses, her boredom, her seeming contradictions, her complicated relationships, her pleasure in life -- all come off as being very three dimensionally real, and, apart from a few bad acts and the occasional moments of craziness, she is very high functioning.Definitely worth watching.
Spoilers in the clip below, but a good example of the narcissistic/sociopathic traits in the character. Also a good example of how useful getting advice from a self-aware narcissist or sociopath can be: