Look who's stalking.. CELEBRITIES TARGETED BY OBSESSED FANS.
SIMON Cowell is the latest celeb left traumatised by a stalker after one allegedly broke into his multi-million euro pad.
The X Factor mogul was watching TV on Saturday night when 29-yearold Leanne Zaloumis is believed to have put a brick through his bathroom window, climbed into his London home and bounced on his bed.
Cowell described the incident as like "something out of a nightmare" and is now frantically reviewing the security arrangements at his EUR12million mansion.
But it seems over-eager fans come with the territory when you're famous.
Stunning actress HALLE BERRY and pop queen MADONNA were both terrorised by crazed Robert Hoskins - who escaped from a psychiatric hospital last month.
The stalker was recaptured in LA and returned to the secure unit he was placed in last July after finishing a 10-year jail sentence for stalking.
Madonna famously testified in Hoskins' trial in 1996 and revealed she had nightmares about the man who tried to enter her home.
He scaled the walls of the star's Hollywood property and jumped into her pool before he was eventually shot by a security guard.
Luckily Madonna was in Florida at the time - but her bodyguard told her Hoskins threatened to kill her.
During the high-profile trial, Madonna revealed: "If he couldn't have me he was going to slice my throat from ear to ear."
Hoskins also made threats against Bond babe Berry, who recently said his escape and the release from jail of another one of her stalkers was the reason she wants to quit the US and move to France.
CATHERINE ZETA JONES almost had a nervous breakdown over an obsessed stalker who threatened to cut her into tiny pieces.
In 2005 Dawnette Knight, 35, was caged for three years after admitting to stalking and threatening the Hollywood star.
Knight claimed she was in love with Zeta Jones' husband MICHAEL DOUGLAS.
She sent the actress vile letters which the mum of two later claimed scared her so much she feared she was going to have a heart attack.
In one of them, Knight said: "We are going to slice her up like meat on a bone and feed her to the dogs."
Zeta Jones branded her "evil" and added: "Your actions will be with me the rest of my life.
"I will be constantly observing, looking over my shoulder."
One of the most terrifying incidents also happened in 2005 when crazed ANNA KOURNIKOVA fan William Lepeska swam naked to the tennis beauty's Miami Beach estate.
Luckily, he went to the wrong house and was arrested by cops.
But Kournikova had already suffered years of trauma at the hands of the homeless man.
He bombarded her with sexually explicit letters and emails, has "Anna" tattooed on his right bicep and once followed her across America to LA. Lepeska, 40, was found to be mentally unfit to stand trial and was ordered to spend six months in a treatment facility in Florida.
In 1998 a man was jailed for 25 years after he was found outside STEVEN SPIELBERG's LA home with a "rape kit" consisting of tape, handcuffs, nipple clamps and a knife.
The film director told the court the stalker had carried out extensive research about him and his family.
The deadly side of celebrity stalkers was tragically revealed in 1980 when former Beatle JOHN LENNON was shot dead by Mark Chapman.
What began as a seemingly innocent obsession ended in Lennon's assassination.
Sadly for Lennon's family and millions of fans, his fame an cost him his life.
Japanese businessman Masahiko Shizawa was slapped with a restraining order and banned from going within 300m of BRITNEY SPEARS in 2003 after a judge ruled he was "abnormally obsessed" with the star.
The pop princess, then just 21, claimed her stalker had been sending her sex toys in the mail and called at two of her homes and that of her parents.
In 2000, pizza delivery man Dante Michael Soiu was convicted of stalking actress GWYNETH PALTROW.
Soiu, 28, sent the star hundreds of letters, some sexually graphic, and left presents at her parents' home.
Paltrow told the court his obsession had given her nightmares and left her terrified she'd be sexually assaulted.
Soiu was declared legally insane and sent to a psychiatric facility.
JENNIFER ANISTON has also suffered the terror of a crazed stalker.
Jason Peyton was accused of travelling across America in a deranged attempt to marry the Friends star.
He was found outside her home in 2010 armed with duct tape, a sharp object and love notes for the star.
KILLER Chapman COURT Lepeska, far left, and Kournikova, second right NIGHTMARE Simon Cowell TERRORISED Halle Berry and Madonna were both stalked by the same man INSANE Dante Soiu followed Paltrow THREATS Dawnette Knight CRAZED Robert Hoskins TERRIFIED Paltrow, Aniston, Spears and Zeta Jones all targeted