EXCLUSIVE: While we wait for the offers on Sundance films like The Words, Celeste and Jessie and others to turn into deals, the other Park City festival, Slamdance, has scored a good one. EPIX is closing a preemptive deal for With Great Power: The Stan Lee Story, a documentary that makes its Slamdance debut on Tuesday. Lee is the co-creator of hundreds of comic character superheros that include Marvel movie staples Spider-Man, X-Men, Captain America, Hulk, Fantastic Four, Daredevil and Iron Man.

I’m told that the documentary will premiere on the pay channel and EPIXHD.com, later this year. The documentary covers Lee’s life, from growing up in the Depression to finding his way to become an iconic comic creator during the Marvel heyday. The film features the likes of Tobey Maguire, James Franco, Samuel L. Jackson, Kirsten Dunst and others who’ve starred in Marvel movies. Lee shows up in all those movies in cameos and is still hatching superheroes at age 88. The film’s produced by Paris Kasidokostas Latsis, Terry Dougas, Nikki Frakes, and Will Hess through 1821 Pictures. WME Global’s Deborah McIntosh is making the deal.