Arpad "Arki" Busson sneaking out of ex-fiancée Uma Thurman's Village townhouse yesterday, shortly before Thurman made her exit as well ... Brad Pitt and Angelina Jolie running errands in Midtown during the day and heading into Alto on Madison Avenue for dinner ... Catherine Zeta-Jones leaving her apartment building ... Kelly Ripa getting in a cab with her son ... Kathy Griffin shooting scenes for Law & Order: SVU with Christopher Meloni and Mariska Hargitay ... Jessica Szohr walking to the set of Gossip Girl at Silvercup Studios in Queens ... Jessica and Ashlee Simpson going to dinner last night ... Katharine McPhee arriving at her hotel ... and Jersey Shore's Snooki and J-Woww posing for pics in the Flatiron District.

David Letterman attending a Rangers game at Madison Square Garden and seated not far from where Jimmy Fallon was cheering on the team with his wife, Nancy Juvonen ... John Leguizamo and wife Justine walking their poodle ... Hilary Duff running errands near Union Square ... Liev Schreiber and Naomi Watts carrying coffee downtown ... Brad Pitt visiting Angelina Jolie on the set of Salt ... Rachel McAdams walking in the West Village ... America Ferrera, Michael Urie, and Becki Newton on the set of Ugly Betty ... John Goodman wandering around by himself ... and Arpad Busson leaving Uma Thurman's townhouse in the Village with her son Levon.

• Lindsay Lohan is "drowning her sorrows" over Sam Ronson in a "sea of men," including 90210's Kellan Lutz and British paparazzo Chris Jepson. She's also going out all the time again, and hit up six clubs in one evening last week. But that's probably just because she's naturally very energetic. [P6]
• In related news, LiLo tells E! that she isn't in talks to join a topless show in Las Vegas, but she'd be willing to dabble in the burlesque world for the right price. [OK!]
• Uma Thurman's rep says she and Arpad Busson did not get married in the Bahamas last weekend, although it's rumored the couple is planning a "low-key" wedding this Saturday instead. [E!, Sun]
• Daphne Guinness was supposedly overheard telling a friend that she and Andre Balazs aren't "seeing each other seriously," since she's about to move in with French philosopher Bernard-Henri Levy. [P6]

• Madonna fell off a horse while riding at photographer Steven Klein's house in Bridgehampton on Saturday. She wasn't seriously injured, but don't think for a minute she's taking any blame for the spill. Her flack blamed the accident on a rogue paparazzo who jumped out of the bushes and startled the horse, although both the photographer in question and the police don't share that account. [NYDN, NYP, E!]
• Uma Thurman and Arpad Busson were rumored to be getting hitched in the Bahamas on Saturday, although there's still no word on whether any ceremony actually took place. [People, UPI]
• Has Lindsay Lohan gone straight? She was spotted "flirting relentlessly" with a group of guys including Leonardo DiCaprio at a club last week. [Sun]
• Rumor has it Naomi Campbell is thinking of moving to Moscow so she can be closer to boyfriend Vladislav Doronin. Say it isn't so! [DS]

• Jose Canseco says Madonna once tried to marry him and have his baby, so she could give daughter Lourdes a Cuban sibling with great genes. He joins Dennis Rodman on the would-be Madonna baby-daddy list. [NYDN]

• Lovebirds Uma Thurman and Arpad "Arki" Busson are engaged. The Swiss financier gave her an enormous ring (so big that Uma "can't fit it through the sleeve of her coat"), which Uma promptly showed off to friends at a party Thursday night and they're now planning the wedding. [NYDN]