Is Oprah Winfrey the most powerful person in politics? Should Britney Spears get the kids for Christmas? And what’s up with Brad Pitt nixing more nude scenes?

Hey, it’s time for another round of Planet Gossip’s war of the words, Mouth Off.

Click below to hear our feisty debate and what some folks on Hollywood Boulevard had to say about Ms. Winfrey's White House ways.

The Planet Gossip satellites see everything, and I give you the best sightings from around the world—and occasionally even beyond it.

THERE'S THE RUB:  Halle Berry, getting a chair massage at the Absolute Spa while waiting for a flight at Vancouver International Airport.

ANATOMY LESSON:  Justin Chambers, working out at Crunch in West Hollywood.

DIRTY DINING:  Patrick Swayze and his wife, Lisa Niemi, having dinner at Chicago’s Le Colonial.

SOLID CITIZEN:  Larry King, getting a bite to eat at Citizen Smith in Hollywood.

DOOR PRIZE:  The Girl Next Door starlet Elisha Cuthbert, picking up a Rebel Yell T-shirt emblazoned with “Girl Next Door” at Abe & Mary’s in Montreal.

JUST THE FACTS:  Mindy Cohn, aka Natalie on The Facts of Life, hanging out with a gaggle of guys at Beige, the weekly gay night at L.A.’s Falcon restaurant.

FUTURE FORECAST

STARRY NIGHT:  You’ve read their celebrity astrology readings here at Planet Gossip. Now, starting tomorrow (and running for three nights), Stella Starsky and Quinn Cox hit New York’s Ars Nova Theater to perform their musical show, Over the Hill and Everywhere.

Sara Ramirez's rep is shooting down rumors that the Grey’s Anatomy star is headed back to Broadway.

Sources in New York City had been telling me Ramirez was considering using some of her time off during the current writers' strike to return to Spamalot, the nearly three-year-old hit musical inspired by the classic 1975 feature film Monty Python and the Holy Grail. Ramirez earned a 2005 Tony Award for her work in the show as the Lady of the Lake.

At the same time, I was told Ms. Ramirez had expressed some reservations about American Idol wannabe and Broadway virgin Clay Aiken joining the cast in January as Sir Robin. Aiken’s gig runs from Jan. 18 to May 4. The role was originated by David Hyde Pierce.

The couple that smokes together stays together?

I just heard from a source in London who spotted Sienna Miller and boyfriend Rhys Ifans on Monday night at the Spiritualized show at Union Chapel in Islington. “They made a dash for a liquor store to buy cigarettes, which they had to smoke outside in the cold due to the smoking ban,” the source wrote in an email.

While Miller, 25, and Ifans, 39, have reportedly been dating since August, the source said the only lip lockin’ they were doing the other night was “with dozens of cigarettes.”

“She probably kept out the cold with her huge white furry coat,” I am told. “Unfortunately, Rhys was in an ill-fitting leather jacket and an ill-fitting Rod Stewart '70s hairstyle.”

Sounds like the very fashionable Ms. Miller needs to give her man a makeover.

Mario Lopez might want to be a little more choosy about the gigs he accepts.

Case in point: Last night’s Boobs or Bust 2/Go Big or Go Home party at Jet nightclub in Las Vegas. The former Dancing with the Stars contestant hosted the evening, which featured a contest for women competing to win $5,000 to help pay for breast augmentation surgery.

I kid you not.

Here’s how it worked. The club distributed preprinted "boob bucks" to bottle-service customers. Women hoping for new breasts had to convince said customers to hand over their bucks. The gal who collected the most scored the grand prize.

And what would a Sin City bash like this one be without entertainer Jeff Beacher? He was dressed as Santa Claus, while his mini Spice Girls (little people dressed as the recently reunited pop stars) performed “Wannabe.”

Lopez’s girlfriend and former Dancing partner, Karina Smirnoff, should be happy to know her hunky boyfriend was on his best behavior. Lopez made sure security kept overly eager gals hoping for his bucks at bay.

Life wasn’t so glamorous for Fergie and the Black Eyed Peas last night.

The hitmakers were performing at an outdoor concert for the opening of the Hard Rock Hotel San Diego when, I’m told, four police officers pulled the plug at about 11:30 p.m.

A rep for the hotel told me the Peas were about 90 minutes into their show in the hotel’s alfresco event space when the cops arrived. Apparently, locals as far as two miles away were complaining about the loud music.

I just got word that the cast and crew of Sex and the City are likely to be landing on the West Coast any day now.

I hear Sarah Jessica Parker & Co. will be spending time in Malibu shooting the movie adaptation of the hit HBO series. My source says scenes will take place there, but parts of the ritzy beach community may also be stand-ins for Mexico’s playground for the rich and famous, Cabo San Lucas. There's also talk they’ll actually do some shooting in Cabo.

A rep for the flick would only confirm that shooting will begin in the next week or two somewhere on the West Coast. She declined to reveal exact locales.

Is a trip to Cabo another sign that Carrie and Mr. Big finally get hitched? Cabo is certainly a honeymoon hot spot.

Sacha Baron Cohen has a thing for showing off his privates. Well, what appear to be his privates, that is.

We’ve already been subjected to Borat dressed in that barely there fluorescent-green banana-hammock bathing suit. Now comes his hilarious turn as Signor Adolfo Pirelli opposite Johnny Depp in Tim Burton’s Sweeney Todd.

There’s no missing Pirelli’s package. “Oh, that was the real thing,” Sweeney Todd’s two-time Oscar-winning costume designer Colleen Atwood told me the other day with a giggle, but quickly admitting, “Yeah, we augmented.”

No surprise, it was Cohen's idea to enlarge his manhood for the flick. Cohen’s body-hugging pants were stuffed with “a little quilted thing.”

Well, not so little. But Atwood said she hopes it comes off somewhat authentic. “We tried different materials and different sizes and positions,” Atwood said with a laugh. “You kind of forget what you’re doing, and you’re just sort of looking at what looks the best. I like if a lot of people think it’s real.”

The Planet Gossip satellites see everything, and I give you the best sightings from around the world—and occasionally even beyond it.

MISTER USA:  Kid Rock, asking the deejay to play Bruce Springsteen’s “Born in the USA” when Floyd Mayweather walked into Jet nightclub to celebrate his knockout over Ricky Hatton.

HOT PLATE:  Atonement star James McAvoy, having dinner at Magnolia in Hollywood with Josh Brolin, Emile Hirsch, Donovan Leitch and Ione Skye.

GUY GIFTS:  Jenny McCarthy, shopping for boyfriend Jim Carrey at the Lisa Kline men’s store on Robertson Boulevard in Los Angeles.