With great charm comes great responsibility, at least if you're George Clooney. On Wednesday night at the Cannes Film Festival, the two-time Sexiest Man Alive puckered up for the greater good at the annual Sharon Stone-hosted amfAR fete to raise money for AIDS research, reports People.

Clooney and his "Ocean's Thirteen" pals Matt Damon, Don Cheadle, Andy Garcia and Ellen Barkin were on hand to auction off a weeklong, yacht-set Mediterranean cruise, but the savvy Stone decided to sweeten the deal for the deep-pocketed crowd.

"If you bid, one of these guys will come down and touch you," she announced. "And you can choose which one."

A bidder quickly coughed up $350,000 for the trip and in the process scored a benevolent buss for his girlfriend from Clooney (we're still not sure whether paying big bucks to let the dapper, swoon-inducing A-lister mack on your squeeze is incredibly thoughtful or incredibly foolhardy, but moving on ...)

And it looks like the selfless lip-lock got Barkin a bit hot and bothered. The mag says the actress, who has denied rumors that she cozied up to George during filming, jokingly offered to smooch him for $500,000.

Clooney took her tongue-in-cheek offer literally, laying some sugar on her as the crowd whipped out their camera phones. Not so good with the follow-through was Michelle Rodriguez, who promised to play tonsil hockey with Sharon Stone if a bid for a tennis lesson with Monica Seles was raised. The price shot up, but the actress failed to press her lips into action.

Also contributing to the evening's record haul of $7 million was Kylie Minogue, who was plucked from the crowd to sing two of her hits -- "Locomotion" and "Can't Get You Out of My Head" -- after the likes of Naomi Campbell, Claudia Schiffer, Eva Mendes, Goldie Hawn and Kurt Russell pooled their resources and offered $300,000. Stone, apparently unable to resist the beat (and the spotlight), hopped onstage and sang backup.

Then there was Dita Von Teese, who hit the stage with her patented titillation act, straddling a sparkly 9-foot mechanical tube of lipstick while wearing Christian Louboutin cowboy boots and pink pasties. If it was half as entertaining as it sounds, it must have been a showstopper.

And it turns out this wasn't the only good deed the philanthropically minded cast of "Ocean's" racked up during their time on the French Riviera. On Tuesday night, they hosted a benefit for Darfur refugees that raised more than $9 million.

According to the New York Daily News, guests forked over as much as $25,000 each for a coveted ticket to the swanky soiree, which was held on board a 237-foot yacht (for those unfamiliar with luxury vessels, that's really, really big).

Among the major donors: Steven Spielberg, who reportedly gave a cool million, and OK! magazine, which anted up an estimated $2 million (and landed the exclusive on the event).

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