G

HOSTFACE KILLAH

, of

Wu-Tang Clan

, surprised the crowd at the Borgata's Mixx nightclub Sunday when he hopped onstage to perform with

Rev. Run

of

Run-DMC

and

DJ Ruckus

. Mixx is closed through June 25, when a new nightlife concept opens in the space. Not performing hip-hop Sunday night at the Borgata was

Conan O'Brien

, though the talk-host did two sold-out shows at the Borgata's Event Center.

On Saturday night, Playboy Playmate of the Year Hope Dworaczyk dined at Michael Schulson's Izakaya, where comedian Bob Saget was also eating in a separate party. Dworaczyk later celebrated her title with a party at club mur.mur, where Roots drummer Questlove was spinning. Dworaczyk made sure to visit Questlove in the DJ booth, as did New Kids on the Block singer Donnie Wahlberg, who gave a shout-out to the crowd. The New Kids performed Friday night at the Event Center, and Wahlberg and Joey McIntyre hit Mixx after their show, while "30 Rock" star Tracy Morgan followed up his show at the Music Box theater with a stop at mur.mur, where he hung out with DJ Eli Escobar.

And speaking of Playboy . . .

Playboy is hosting parties in 50 cities on June 10 to celebrate the 50th aniversary of the Playboy Clubs. Philadelphia's party is taking place at Shampoo (417 N. 8th). The club will be transformed into a Playboy Club with bartenders and cocktail staff in Playboy bunny costumes. There will also be a Philadelphia bunny search in which one winner will be featured on playboyclub50.com and have her photos submitted to Hugh Hefner for consideration for Playboy magazine. Miss August 2010, Francesca Frigo, whose issue won't have come out yet, and Miss June 2006, Stephanie Larimore, will serve as guest hostesses. Q102's Maxwell will emcee the Bunny Search.

For info on how to enter, visit www.shampooonline.com. Tickets are $15 in advance through showclix.com for the party and all ticket buyers will be entered to win a weekend trip to Las Vegas.

Bradley Cooper's luxury condo

Just before the holiday weekend, Bradley Cooper moved out of the 2,700-square-foot condo at 10 Rittenhouse (130 S. 18th), where he had been staying for two months while shooting "The Dark Fields" in town. The Germantown Academy grad crashed in a 2-BR, 2 1/2-bath unit with a great view of Rittenhouse Square. Cooper and girlfriend, Renee Zellweger, were regulars at the gym on the third floor of the luxe high-rise, we're told. Cooper's unit will likely be on the market any day, priced between $2.2 million and $2.7 million.

Sparks in Northeast today

Singer Jordin Sparks will be at the Bustleton Avenue Rite Aid from 4 to 6 p.m. today to meet and greet fans and raise awareness for childhood cancer with the Alex's Lemonade Stand Foundation (ALSF). The "American Idol" winner will sign autographs while Q102 gives away Mike and Ike candies and gifts such as tickets to Sparks' July 18 show at the TLA (334 South). Sparks will also, through ASLF, meet children who had or have cancer. Sparks performed in February at the ALSF's annual Lemon Ball gala.

Out and about

_ Actors Terry Crews and Essence Atkins took a break from a busy day promoting their new WB series "Are We There Yet?" to have dinner at Buddakan (325 Chestnut) the other night. Crews, an ex-Eagle who starred on "Everybody Hates Chris" and played President Camacho in "Idiocracy," went for barbecue pork, while Adkins, best known from the series "Half & Half," had tuna tartare and black cod. They later joined 105.3 WDAS's Patty Jackson at Dave & Buster's (325 N. Columbus) for a show-viewing party for hundreds of contest winners.

* NBA analyst and ex-Sixers GM Billy King and wife Melanie stayed late at Downey's (Front & South) Saturday, joined by several friends.

Big honor for B101's Tiffany

Congrats to B101 morning co-host Tiffany Hill, just back from Beverly Hills where she was awarded Outstanding Host Information/Entertainment at the Alliance for Women in Media's annual Gracie Awards Gala.

Local chefs in 'Hell's Kitchen'

Look for three local faces on tonight's premiere of "Hell's Kitchen," (8 p.m., Fox). Rockledge-raised Siobhan Allgood, 25, currently between jobs; Salvatore Coppola, 35, owner of Coppola Pizza, in Clementon; and Ed Battaglia, 28, who teaches cooking at Garfield Park Academy, in Willingboro, will all face the temper of chef Gordon Ramsay.

Visit PhillyGossip.com for Dan's latest updates or follow PhillyGossip on Twitter. Have a tip? Call 215-854-5963, or e-mail grossd@phillynews.com. For recent columns, visit go.philly.com/dangross.