03/06/2014 03:53 EST | Updated 03/06/2014 03:59 EST

Scariest Music Celebrity Stalkers: When Fan Obsession Goes Too Far

AFP/Getty Images via Getty Images
NEW YORK, UNITED STATES: ACOMPANA NOTA EEUU-MUSICA-LENNON / PERSONAJE (ARCHIVO) Foto del 09 de diciembre de 1980 de Mark David Chapman, asesino convicto del cantante John Lennon, quien pidio salir en libertad condicional el 30 de setiembre de 2004 tras pasar 20 anos de carcel. Chapman fue condenado a entre 20 anos y perpetuidad por asesinar a balazos al ex integrante de los Beatles frente a su domicilio en Nueva York el 08 de octubre de 1980. AFP PHOTO / NYC PD (Photo credit should read NYC PD/AFP/Getty Images)

Earlier this week, Taylor Swift was granted a restraining order against Timothy Sweet, a man who has been stalking her since January, 2011.

According to legal documents filed by the singer, and obtained by TMZ, Sweet has been sending Swift a barrage of disturbing letters, e-mails and social media posts for the past three years in which he claims that he is married to her and threatens to kill anyone who stands in his way, including Taylor's family and Secretary of State John Kerry.

This has, understandably, left poor T. Swift quite concerned about her safety as well as the safety of her family. As a result of the restraining order, Sweet must stay at least 100 feet away from the singer and her family.

We may like to tease the celebrities of the world for whining about some of the more superficial pitfalls of fame and fortune, but stalkers are no laughing matter. Castration plots, decapitation plans and troubled and obsessive fans who will do anything to to meet -- and often harm -- the object of their obsession are an all too common side effect of celebrity.

Britney Spears and Justin Timberlake, among others, have been troubled by the overenthusiastic orchestrations of people who believe they're destined to be together and are more than happy to engage in a lot of trespassing to prove it. Madonna, Beyonce, Selena Gomez and Bjork have all been terrified by the threats of so-called devoted fans who brutally turned against them. John Lennon and Selena even died at the hands of theirs.

Here are 14 of the the creepiest cases of musical celebrity stalkers.

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