Back in September, as headset-wearing producers and stern-looking dudes in tool belts scurried in and out of Fall Out Boy's Fantasy Suite at the Palms Hotel and Casino, bassist Pete Wentz stood in the hallway, looking somewhat bewildered and talking to guitarist Joe Trohman about his desire to have someone "document all this crazy sh--."

Well, it looks like he found his man. In keeping with pretty much everything Wentz does, it's a rather surprising choice: legendary documentary filmmaker Albert Maysles, one-half of the team that made the Rolling Stones' seminal "Gimme Shelter" tour film and later, "Grey Gardens," a look at a pair of aging socialites living in a crumbling mansion in the Hamptons.

It's a particularly amazing moment for FOB, and to be honest, they're still not really sure how it happened.

"Albert came along and was like, 'I'm really interested in doing something with your band,' and we did the thing like when you're in high school and the hot girl talks to you, and you sort of look behind you and go, 'Who, us?' " Wentz laughed. "I mean, he did 'Gimme Shelter,' and it's amazing, and seriously, this guy could document pretty much anything, and he wanted to do something with us. That's what blew our minds more than anything."

Maysles and his crew hit the road with Fall Out Boy for five dates on their Young Wild Things Tour, filming both the band's secret show in Buffalo, New York, on November 19 (which they played under the alias "Schrute Farms") and Wentz's cameo in an upcoming Cobra Starship video, which was shot this month in Brooklyn, New York. The goal, according to Wentz, is to document "how the industry is changing," by focusing on his mega-successful stable of Decaydance Records artists.

"He came across us and Panic and this family of bands, and he seemed to see something he'd be interested in filming. I think he liked the way we did things," Wentz explained. "I don't know how it's going to end up. Albert doesn't come in being like, 'I want to do this as a narrative.' He films everything and captures these moments. So who knows? ... It could be like [the Metallica documentary] 'Some Kind of Monster.' "

The plan is to have Maysles document the next year of FOB's life, which should include writing and recording a new album. Wentz said that he's not really sure what will come of the film, but he does know what he doesn't want it to be.

"I'm really excited about it, whatever happens, because I think most bands just film a bunch of crap for 'the official DVD,' and those are always kind of cheesy, like just extras to sell the re-release of the album," Wentz laughed. "We'd like to have it submitted to some festivals, maybe release it as a proper, real DVD in the fall. I'm not sure. All I know is, I can look forward to having Albert and his crew sleeping on my couch."