MacLachlan, Menounos, Fallon attend Water Club opening

 Kyle MacLachlan's not nearly as creepy as many characters he's played. The "Desperate Housewives" actor sounded frightened by our description of the Mutter Museum (19 S. 22nd) Thursday night at a party for opening festivities of the Water Club, Atlantic City's luxury hotel by Borgata.

MacLachlan, a longtime collaborator of the Pennsylvania Academy of the Fine Arts-educated David Lynch, asked us for recommendations for sights to see Friday when he planned to spend the day in Philadelphia. We learned MacLachlan's also a good impressionist as he greeted "Access Hollywood's" Maria Menounos with a "Hello Maria," as a convincing Gov. Arnold Schwarzenegger. Former "SNL" star Jimmy Fallon, who takes over "Late Night" from Conan O'Brien next year, says he's preparing by honing his stand-up skills. Fallon, who's meeting with potential writers, told us he's worried only about the first show, but thinks after that he'll have a better sense of how it's gonna work and what he wants to do. Singer Idina Menzel toured the hotel's indoor pool area as the reception was winding down. She performed that night at the Borgata's Music Box Theater.

Chef Wolfgang Puck, who has the American Grill at Borgata, was also at the Water Club this past weekend signing cookbooks and shopping at the Hugo Boss store for an upcoming trip to Europe. Store owner Norman Vosko gave Puck a suit, which he accepted on the condition that Vosko and wife Denise would have a free meal at one of his restaurants in Las Vegas during an upcoming trip there. Puck told Vosko that if they didn't take him up on the free dinner, he'd ball up the suit and ship it back to him. MacLachlan also picked up a suit at the store. Before the party, Menounous, actress/model Molly Sims and Victoria's Secret hottie Selita Ebanks stopped at the Hearts On Fire store at the Shoppes at The Water Club where Menounos and Harvey Rovinsky, Bernie Robbins owner, and a partner in the HOF store, talked football. They agreed to disagree as Bostonian Menounos is a stinkin' Pats fan, and Rovinsky lives for the Iggles. Menounos told us she had never been to Philadelphia, but she was sure to point out that in the past week, she'd eaten five steak and cheeses, as cheesesteaks are called in Boston. She certainly didn't look like it. There are no cheesesteaks at Izakaya, chef Michael Schulson's new Japanese pub at the Borgata, which some Water Club guests were invited to preview Thursday. Schulson, chef/star of Style Network's "Pantry Raid," opens Izakaya July 8. It's his first restaurant. For now. The chef, formerly of Stephen Starr's Pod and his New York Buddakan, is living with family in Margate overseeing the Izakaya opening, and told us he has a lease on a high-end Japanese restaurant near the Kimmel Center, but wouldn't give a name or location.