“On a recent weekend, Jeremy rode the Planet Hollywood private jet from Las Vegas to Los Angeles and...started chatting about Entourage. [Piven] suggested that it would be fun to have [his seatmate] make an appearance...Jeremy was overheard calling a producer and telling him as soon as the plane touched down in LA.”

So which diva extraordinaire tickled Piven’s pickle so well she earned herself a much-needed spot on the HBO hit? Details after the jump.

Apparently Piven was seated next to one Miss Whitney Houston on the short plane ride in question, and something in her dilated eyes, crack pipe-wounded chuckle, and most importantly, her tightly packed and newly improved cleavage, inspired Jeremy to give this bitch one hell of a hug and offer her a cameo on Entourage. The mind reels just picturing what Piven has in mind — a competitive power agent who lures clients away using a goodie-packed drawer in her office? Turtle's new S&M-loving cougar crush? Ari's ex-wife's new lesbian lover (remember: lesbians are so hot this season)? We can hardly wait for the inevitable gossip stories involving ongoing on-set epic bickering between two of the most self-important stars around today.

[Photo credits: FilmMagic, Wireimage]

• JEREMY PIVEN IS ALWAYS WORKING [Janet Charlton]

Yes, according to Showbiz Spy, none other than cell phone thrower and luggage assaultress Naomi Campbell is confirmed to guest star in the season finale as well. While we doubt Campbell would lower herself to playing any kind of burger flipper, the two lawbreakers will presumably come into contact at some point during filming. And the potential scenarios are endless: will Naomi, in a frantic moment of jealousy over Lohan's extensions, plant powder in Lindsay's fast food costume pockets? What if Lindsay relapses on set and passes out in the vicinity of Campbell's diamond-encrusted Blackberry, prompting the supe to repeatedly throw it at the unconscious Lohan until she comes to? More frightening (and most plausible), the two will likely become BFFs and plot complicated schemes to do all of the above to poor America Ferrera. Good girls, sadly, tend to finish last.

[Photo credits: Getty]

• LINDSAY LOHAN BACK IN TALKS WITH UGLY BETTY [TVG]

As the Daily Mail reports, Britney may have giggled her way through a treadmill workout in LA last week, but "Britney's hard work may be counter-productive - she was spotted with a packet of Marlboro reds as she left the gym." Reds? Really? Not that we, ahem, smoke or anything, but our friends tell us Reds tend to wreak havoc faster than most cancer sticks. Nevertheless, a giddy cover story in Star claims Spears has shed a whopping 20 pounds since Rudolph put her on the straight and narrow. If only grumpy HIMYM star Neil Patrick Harris would quit whining about her upcoming return to the show, Britney's Comeback Tour could finally progress a bit speedier.

• BRITNEY SPEARS' NEW BIKINI BODY [Star]
• BRITNEY ON THE TREADMILL: IS THE STAR SHAPING UP FOR ANOTHER COMEBACK? [Daily Mail]

"The show is ecstatic and so is Britney," a source said. "She had so much fun the first time around she really wanted to come back. It was a mutual decision to work together more."

The singer/actress will do one episode, the source says.

CBS refuses to verify if the tip is correct, much less divulge any plot details. It's widely believed, however, that Britney would be reprising her role as an emotionally fragile receptionist, picking up from her cliffhanger proposition ("Can we have sex on [your bed], and then go shopping?") for Neil's playboy character. The ensuing real-time sex-romp episode will require Harris to roll around nearly naked with his KFC-breathed co-star for a total of 17 rehearsal and shooting hours, fiendish retribution from producers for having become a little too forthcoming with his thoughts on how best to proceed creatively with the yet-to-be-renewed series.

• EXCLUSIVE: Britney Returning to How I Met Your Mother [People]

"Our show does not need stunt casting in order to succeed...I worry that if they start `Will and Grace'-ing us too much, that the show will suffer...I think we have a great show going, and I hope it's not screwed up by the desire for 700,000 more viewers."

Though NPH has a valid and somewhat dignified point about the desperate nature of stunt casting, we're not sure he has all the facts straight regarding exactly how much attention Britney Spears brought to the show. As he continues, "I think we have a great show going, and I hope it's not screwed up by the desire for 700,000 more viewers." In fact, Yahoo reported recently that the Britney Spears episode hauled in 10.6 million viewers, as opposed to the 7.6 million HIMYM had been averaging until that fateful night. And while he laments the show's decision to stunt cast, he backtracks by lauding Spears' performance: "It was a great character and I think she played it well. ... I'm glad that we didn't sensationalize the character in any way." And finally, did he really knock the incredibly successful run that W&G had? We hope, and should think Harris hopes the same, that HIMYM makes it to an eighth season, or even scores half as many Emmys as the NBC show did. Stunt casting, as proven by canonized shows like W&G and Friends, can be just dandy if done right...right?

• STAR WANTS NO PART OF BRITNEY ON 'MOTHER' [AP]

While we don't have a winged woman sitting on our mantel, we do know one thing that Emmy winner Tina Fey knows: Hartnett is hot, no matter how humorous his facial hair. While SNL's Jason Sudeikis was suitably hunky in his guest starring spot as former Liz Lemon steady, he just can't compare in the looks department to our man Trip Fontaine. Which brings up something else we and Tina both know: the show's current cast features nary a bit of eye candy for the ladies. Katrina Bowden's short-skirted Cerie may help pull in the non-thinking male demo, but unless you've got a thing for walrus types, the pickings are slim for us girls. Which is why we applaud Tina Fey for looking out for the best interests of Liz Lemon and 30 Rock's female audience. Bonus points if he actually turns out to be good!

UPDATE: Nevermind!

• A PIECE OF THE 'ROCK' FOR JOSH? [OK!]

That the last few turbulent years of the pop star's life was a brilliantly planned and executed publicity ruse, with the singer/actress snapping back into a model of level-headed professionalism the second she gets within 15 meters of a sound stage craft services table. It's almost plausible, until that moment Spears comes barreling out of her dressing room and tosses the melted remnants of of a Double Chocolaty Chip Frappuccino Blended Crème at a camera operator she mistook for a paparazzo, before hunting down "that scene-hogging witch-lady" Alyson Hannigan with a cordless electric hair clipper.

• etonline.com