Britney Laughed “A Lot” on Mother Set  —  Usmagazine.com has confirmed that Britney Spears will guest star on the March 24 episode of the CBS sitcom How I Met Your Mother.  —  The pop star, 26 will play Abby, a receptionist at a dermatologist's office who falls for architect Ted (Josh Radnor) when he comes in to have a tattoo removed.

Justin Timberlake Calls Britney Spears A Wannabe  —  Justin Timberlake took a few jabs at his former flame Britney Spears when introducing Madonna at the Rock and Roll Hall of Fame ceremony on Monday.  —  “She has still found time to kiss someone I may or may not have publicly kissed myself …

Man with Rifle Arrested at Kate Hudson's House  —  TMZ has learned a person with a gun has been arrested at Kate Hudson's house in New York City.  —  Law enforcement sources tell TMZ a woman called 911 after seeing what she thought were men on her roof with a rifle.

Arnold ‘tried to help Spears two years ago’  —  Tom Arnold has claimed that he urged Britney Spears to get help for drug addiction two years ago after finding her slumped in the stairwell of his apartment block.  —  The actor said he tripped on Spears after discovering her in the hallway …

OMG Gene Simmons is bald!!!  —  So there have been all these rumors that Gene Simmons wears a wig and is really bald, and now it looks like we are going to finally learn the truth this season on Gene Simmons Family Jewels on A&E. The third season of Family Jewels premieres tomorrow night on A&E at 10p with back-to-back episodes.

Mary Ann — More Like Mary Jane!!  —  Dawn Wells, the actress that played Mary Ann on “Gilligan's Island,” was busted with marijuana in her car after driving home from her birthday party — and she's 69!  —  Wells was pulled over on October 18 after a Teton County sheriff noticed her swerve across …

Janet Jackson Hospitalized With Flu  —  Janet Jackson was taken to Cedars-Sinai Medical Center in Los Angeles “late last night with a shortness of breath,” a source tells Usmagazine.com.  —  But her rep tells Us this morning, “Janet is fine.  She's just battling this flu like everyone else.”

Quaid Makes Me Randy  —  Dennis Quaid looks ready for action in the new Italian Vanity Fair (Marzo 5, 2008)—one point off for the odd Botoxed brow effect (why does Botox create that dip between the eyebrows?), but otherwise an A+ for the soon-to-be 54-year-old:

Hugh Laurie Experimented with Vicodin For His House Role  —  Not that he's been labeled a realistic Method actor before, but Hugh Laurie admits he attempted to get closer to the character he portrays on House — by experimenting with Vicodin, the strong painkiller to which Dr. Gregory House is addicted.

Tom Hangs With Woman Who Used To Be Meg Ryan  —  So much has happened in the 10 years since Meg Ryan and Tom Hanks last shared the screen in You've Got Mail — namely, she got a new face.  The three-time co-stars met cute last night at the Rock and Roll Hall of Fame induction ceremony in New York City.

Benji Madden  —  After his new girl-about-town Paris Hilton rocked a glittery B-is-for-Benji Madden pendant and “BM” ring over the weekend, Madden stepped out Monday with his own love-dedicated bling: a “PH” ring on his ring finger.  The couple that shines together also parties together …