Jay Leno Hospitalized, Tonight's Show Canceled … BURBANK — “Tonight Show” host Jay Leno has been hospitalized.  —  According to Tracy St. Pierre of NBC, Leno checked himself in to the hospital because he wasn't feeling well.  —  St. Pierre confirmed, tonight's show taping has been canceled.

Samantha Ronson on Relationship With Lindsay Lohan: “It's Complicated”  —  Samantha Ronson might be having second thoughts about her breakup with ex Lindsay Lohan — at least on Facebook.  —  After a tumultuous fight with Lohan on April 4, Ronson removed her “In a Relationship” status on the social networking site.

Michael Phelps on Miss Calif. Rumors: “I'm Single”  —  Michael Phelps is denying rumors that he is romancing controversial Miss California contestant Carrie Prejean.  —  “I'm not dating anybody,” he told Usmagazine.com Wednesday at the opening of the Omega flagship boutique in NYC.  “I'm single.

FIGHT THE FLAB  —  OVER the years, Mario “Fanta Pants” Batali's weight has ballooned along with his ego.  It's gotten so bad, insiders said, that his pal Gwyneth Paltrow gave him a free membership to the pricey gym that she and her fitness friend Tracy Anderson are opening in TriBeCa this summer …

Terrence Howard: ‘Iron Man 2’ Decision a ‘Very, Very Bad Choice’  —  Don't look for Terrence Howard to reprise his role in Iron Man 2.  He was replaced in the sequel by Don Cheadle after a rumored dispute with producers over salary issues.  But Howard insists that karma is on his side.

JT Explains Extreme PDA Session  —  Competition is a good enough reason to lay one on your girlfriend in front of 18,000 people, especially if you happen to be Justin Timberlake smooching Jessica Biel to show up Dustin Hoffman.  —  On last night's Jimmy Kimmel Live!, JT admits his reasoning behind …

Jacko Flees in SUV After Crash With Ambulance: EMT  —  Man snaps photos allegedly showing King of Pop entering vehicle  —  King of pop Michael Jackson may have been involved in a bizarre hit-and-run collision with an ambulance in Beverly Hills on Wednesday afternoon, a medic said Wednesday.

Hayden Panettiere — Victim of a Jewelry Heist  —  TMZ has learned Hayden Panettiere's Los Angeles home was burglarized last week — and thousands of dollars worth of jewelry was stolen.  —  Law enforcement sources say Hayden returned from vacation on April 15th and discovered around $15,000 worth of jewelry was missing.

LADY GAGA is so potty about her teacup she seems to think it's alive.  —  I had one of the oddest conversations of my career after the chart-topper phoned me on Tuesday.  —  She wanted to set the record straight about her cherished floral china and say ta-ta before heading off to Amsterdam on her Fame tour.

Susan Boyle: Just Kidding About Not Being Kissed  —  Britian's YouTube singing star Susan Boyle is backtracking on her claims that she has never been kissed.  Boyle, appearing on Simon Cowell's “Britain's Got Talent” 10 days ago, told cameras she lives alone with her cat Pebbles and has “never been married, never been kissed.

Pregnant Heidi Klum: I'm Hoping For a Girl!  —  The Project Runway host — who is raising Leni, 5, Henry, 3, and Johan, 2, with husband Seal — also reveals her family is hoping for a girl.  —  “We'd be happy with either,” she tells Us Weekly in her only interview about her fourth pregnancy.

Is Idris Elba bailing out of Obsessed?  —  “Obsessed” is in theatres tomorrow and rumor has it Idris Elba has bailed out of all press.  This week, Elba did not attend the New York City press junket, canceled on BET's 106 & Park and supposedly he will not be at the red carpet premiere tonight in New York City.

Exclusive!  Taylor Lautner and Selena Gomez!  —  Couple made in Tween Heaven!  —  Both 16 and both in Vancouver - Selena Gomez arrived in town last week to begin work on a new movie called Ramona and Beezus.  —  My sources tell me exclusively that she and Taylor Lautner, of Twilight of course …

Wasting Away: Experts Say Lindsay Lohan Has Reached a Dangerous 95 Pounds  —  Wasting Away: Experts Say Super Skinny Lindsay Lohan Has Dropped to a Dangerous 95 Pounds  —  Lindsay Lohan's fragile frame has been a cause of concern for quite some time now, however photographs of the actress shopping …

Hugh Jackman: I'm Not Gay  —  “I'd be happy to go and deny it, because I'm not,” he says in this Sunday's Parade magazine.  “But by denying it, I'm saying there is something shameful about it, and there isn't anything shameful.”  —  Questions about the star's sexuality surfaced …

Japanese pop star arrested for alleged indecency  —  TOKYO - A Japanese pop star was arrested Thursday for public indecency after being found drunk and naked at a Tokyo park, police said.  —  Tsuyoshi Kusanagi, a member of hugely popular group SMAP, was arrested on the spot after neighbors complained …

John Mayer's New Piece  —  John Mayer might have a new piece to keep his twitter warm after Jennifer Aniston Riverdanced all over his heart like the man-eating tramp she is (served with a heaping dollop of sarcasm.)  Star Magazine says John has moved on from 40-year-old Jen to 23-year-old ex-buffalo wing server Scheana Marie Jancan.

TWILIGHT CONVENTION COMING TO TEXAS  —  Stephanie Meyer's Twilight series is branching out from its Comi-Con booth and getting a convention of its own, TwiCon!  —  The big state of Texas is hosting the largest United States conference inspired by the wildly popular vampire series Twilight.