Jay Leno and Conan O'Brien Turn on Each Other  —  The late-night barbs aren't stopping, and Jay Leno and Conan O'Brien have switched from making fun of NBC, to taking jabs at each other.  —  “Nobody knows what is going on.  Conan O'Brien, understandable, is very upset.  He had a statement in the paper yesterday.

EXCLUSIVE: Kate Gosselin Hates Her $7,000 Hair Extensions!  —  Hair today, tears tomorrow?  —  Kate Gosselin, 34, marked the new year by trading in her signature spiky bob for long, blonde locks in a process that took 20 hours of work and would normally cost $7,000 (hers was comped).

R&B singer Pendergrass dead in Pa. at 59  —  NEW YORK (AP) — R&B singer Teddy Pendergrass, who was one of the most electric and successful figures in music until a car crash 28 years ago left him in a wheelchair, has died of colon cancer.  He was 59.  —  Pendergrass died Wednesday …

Kidnapping 911 Call at Heidi and Spencer's  —  UPDATE: The man who was cuffed and put in the police car has been released.  He says he works for Spencer Pratt.  —  The LAPD received a call for a “possible kidnapping” at the Los Angeles home of Heidi and Spencer Pratt ... sources tell TMZ.

Brangelina Give $1 Million to Haiti Relief, Join Chorus of Worried Celebs  —  Brad Pitt and Angelina have pledged $1 million to the relief effort in the wake of devastating earthquakes in Haiti.  The Hollywood power couple are giving the huge sum to Doctors Without Borders …

Lindsay Lohan braces herself for release of internet sex tape (as she makes uninhibited appearance in daring open shirt)  —  Lindsay Lohan may be fearful that an old sex tape is about to surface on the internet, but she put up a brave front last night.  —  The 23-year-old actress went bra-less …

Elton and ‘American Idol’ - Is the Bitch Back?  —  So TMZ may have led the way in the search for Simon Cowell's replacement on “American Idol.”  —  On TMZ TV — the day Simon announced he was leaving — we floated Elton John as the guy who should take Simon's seat.

Dexter's Michael C. Hall Has Cancer  —  Dexter actor Michael C. Hall revealed Wednesday he has been battling cancer, but said he's almost finished with treatment and the disease is in remission.  —  Hall, 38, said in a statement he is lucky to have been diagnosed with the …

Rep: Katy Perry Is Not Pregnant  —  Despite the rumors circulating online, Katy Perry is not pregnant.  —  The star's rep tells UsMagazine.com that reports claiming Perry — who got engaged to Russell Brand on New Year's Eve in India — was getting a sonogram and showing off a baby bump were “not true.”

The Bachelor's Bob Guiney and Wife Rebecca Budig Split  —  It looks like Bob Guiney is a bachelor once again.  —  The reality star — who became beloved as the jovial, self-effacing regular guy looking for love with Trista Rehn (now Trista Sutter) on The Bachelorette and then as the star …

Paramount eyeing ‘Four Brothers’ sequel  —  Mark Wahlberg will star; most of creative team to return  —  Paramount is developing a sequel to its 2005 thriller “Four Brothers,” bringing back many of the creative team for “Five Brothers.”  —  Mark Wahlberg eyeing a return to star and hatched …

George Clooney to Host MTV Telethon for Haiti  —  This is exclusive to this column: actor George Clooney is planning to host a telethon to raise money for the people of Haiti next Friday on all the MTV channels.  —  George told me last night at a private reception for his movie “Up in the Air” …

Sutherland wears dress on ‘Letterman’  —  Kiefer Sutherland donned a dress for his appearance on last night's instalment of The Late Show With David Letterman.  —  The 24 star joined Letterman on stage wearing army boots and a green patterned dress with a long-sleeved white shirt underneath.

Jesse McCartney - No Nude Photo, Or Else  —  Jesse McCartney wants everyone to know ... if you publish a nude photo of him — even one that looks like him — he'll sue you.  —  The photo is floating around ... showing what looks like a naked McCartney all by his lonesome, laying on a bed with a candy G-string, fully exposed.

‘Real Housewives’ Husband Popped for DWI  —  The husband of Teresa Giudice from “Real Housewives of New Jersey” was hospitalized early this morning after wrecking his car in NJ — where cops from one town charged him with DWI ... and then cops from another town swooped in and arrested him over some outstanding warrants.

EXCLUSIVE: ‘Captain America’ & ‘JP4’ News  —  Joe Johnston's career blasted off big time when his first feature, Honey, I Shrunk the Kids, scooped up $130 million at the box office and was cemented in the pop culture as a Disneyland attraction.  Since then, he's had the luxury of following his instincts …

Ask Ausiello: Spoilers on 'Grey's,' ‘House,’ ‘Glee,’ ‘Bones,’ and more!  —  Got a scoop request?  An anonymous tip you're dying to share?  Just want to say hi?  You can send any/all of the above to ausielloscoop@ew.com  —  Question: What's coming up for Sam and Addison on Private Practice?