Run for the money ...

Amanda Bynes, Saffron Burrows and Thandie Newton got a shock at the premiere of "Run, Fat Boy, Run."

The buzz, supported by runners in marathon gear wearing T-shirts for the National Erectile Dysfunction Awareness charity, was that everyone would jog from the ArcLight to the after party at Les Deux in their Jimmy Choos. The only invitee who looked moderately prepared was John Krasinski, wearing sneakers and in decent shape after his football rivalry with George Clooney in "Leatherheads."

Director David Schwimmer set the pace when he energetically trotted to the stage to introduce the film. Then star/co-writer Simon Pegg, who's tripped up during a London marathon in the romantic comedy, warned everyone to beware of aggressive photographers shouting from behind the barricades.

But the rumored benefit run along Hollywood Boulevard turned out to be a running joke.

"It was a great idea, but I'll save it for the sequel," said Schwimmer, who hung close to Zoe Buckman at Les Deux.

"He canceled the run because his beautiful girlfriend is wearing very high heels and his mum's here," explained Pegg after signing autographs for his "Shaun of the Dead" fans.

For more on Schwimmer and "Run, Fat Boy, Run," check out Sunday's LA.COM.

>JOEL STRATTE-McCLURE/SPYWITNESS