Dan Gross: Schwarzenegger, Shriver split a shock

MARIA SHRIVER didn't indicate anything was amiss in her marriage to Arnold Schwarzenegger when she thanked East Falls' Harry Jay Katz, an old friend, for sending the couple a bottle of vinegar that his wife, Debra Renee Cruz, made for their 25th anniversary on April 26.

Katz, who befriended Shriver in the 1970s when she worked for KYW-TV, attended the couple's wedding in Hyannis, Mass.

"Thanks for thinking of us and sending wishes on our special day," Shriver wrote in a letter.

"It was so kind of you to include the recipe in case we want to try our hand at making more."

That seems unlikely as Shriver, a journalist, and Schwarzenegger, former California governor who is getting back into acting, revealed their separation to the Los Angeles Times Monday night.

Hanging with Mrs. Cooper

Bradley Cooper crashed with his mother, Gloria, at his childhood home in Rydal while in town Monday and Tuesday promoting "The Hangover 2," which opens May 26. Cooper took mom to lunch at Parc on Rittenhouse Square yesterday. On Monday he was based out of Daniel Stern's R2L at Two Liberty Place for a day of interviews with local and national outlets.

Charitably minded

DeSean Jackson is expecting a dozen teammates at his 10 Foundation's benefit for pancreatic-cancer research Friday at the Water Works Restaurant and Lounge. The Eagles wide receiver started the foundation in honor of his father, Bill, who died of the disease in 2009. NBC10 anchor Renee Chenault Fattah and WDAS' Patty Jackson will be honored for promoting awareness of pancreatic cancer.

Teammates Stewart Bradley, Brent Celek, Todd Herremans, Jamaal Jackson, Jeremy Maclin, LeSean "Shady" McCoy, Juqua Parker, Leonard Weaver, Brandon Graham and Jon Dorenbos, who will perform magic, are among those expected to attend.

The foundation's motto, based on Jackson's jersey number, is 10-10-10. Take 10 minutes to learn more about pancreatic cancer, tell 10 friends to visit Foundation10.com and donate $10 to help fight the disease.

Tickets are on sale for $250 at Foundation10.com.

* A signed guitar from Yes frontman Jon Anderson is among auction items at the Cancer Support Community of Philadelphia's annual gala May 20 at Urban Outfitters at the Navy Yard.

CSCP marketing director Scott Bluebond is a huge Yes fan, and his friend Rich Chodak, who owns Bluebond Guitars (511 S. 4th), donated a Takamine acoustic guitar to be signed.

Chodak took over the shop from the late Dale Bluebond, who was Scott's cousin. Chodak was happy to help the charity because he recently lost his father, Harry Chodak, longtime owner of Oscar's Tavern (1524 Sansom), to esophageal cancer.

Local designer Tory Burch is due to

receive the Medal of Inspiration award at the fundraiser. Tickets are $250 and available by calling 215-879-7733 or at cancersupport-phila.org.

Maclin's birthday party

Eagles wide receiver Jeremy Maclin, who is 23 today, celebrates his birthday tomorrow at Sumo Lounge (1224 Chestnut). The party, thrown by The Cool Kids, starts at 10.

Win in Philly, now to Cannes

"Recreator," which won best picture at Philadelphia Terror Fest, plays the Cannes Film Festival Saturday and next Wednesday. The film, about teenagers who have to battle clones of themselves created by a mad scientist, was shot in upstate New York.

Happy Birthday, GPTMC

The Greater Philadelphia Tourism Marketing Corp. celebrates its 15th birthday today and, as part of its walk down memory lane, it will post some of its memorable ads at visitphilly.com/pressroom.

GPTMC, which has helped bolster tourism and spending in the area since its inception, is shooting a commercial around town to begin airing June 6.

Publisher's progress

Cherry Hill's Casey Exton, publisher of Outlaw Biker and five tattoo magazines, is recovering from heart surgery. "I feel like a new person," Exton says.

Visit PhillyGossip.com for Dan's latest updates or follow PhillyGossip on Twitter. Have a tip? Call 215-854-5963, or email grossd@phillynews.com.