Chaz Ebert is waiting until the Sundance premiere of Life Itself — the documentary about her late husband, Roger Ebert — to watch the film in its entirety. Surrounded by her daughter, granddaughter and friends, she'll sit in a dark theater Jan. 19 and watch his life unfold at one of the festivals he loved most.

"It seems like a Roger thing to do," she says. "I want to experience this like we experienced other discoveries we had at Sundance over the years."

Based on Roger's 2011 memoir and directed by Hoop Dreams' Steve James, the film traces the outspoken film critic's professional and personal journey from Pulitzer Prize-winning writer at the Chicago Sun-Times to his rise as a beloved TV movie reviewer alongside Gene Siskel and, ultimately, to his 11-year battle with thyroid cancer, which ended in April when he died at age 70. Typical of Ebert, even in death, his Life Itself will not be a normal Sundance screening. Because it was partly financed by a crowdfunding Web campaign — raised $150,000 on top of the reported $1 million budget — the film's backers will be given private access to a virtual screening so that they can stream the film online at home as it unspools during its world premiere in Park City.

"Roger was an early adopter of technological advances," says Chaz. "But it was never technology just for technology's sake — it was technology in order to reach out and touch as many people as possible."

Ebert touched people, all right, particularly at Sundance, where he'd been an enthusiastic presence almost from the festival's start. "One of the things that always struck me is that film critics try to be very incognito, but Roger was famous, famous, famous," says James, who spent four months shooting Ebert for Life Itself in late 2012 and early 2013, even getting access to intimate medical procedures (Ebert eventually lost most of his lower jaw to cancer). "He would be at Sundance, and he didn't have a handler. It was like he was a fan, like somebody going to the movies because he liked movies. He didn't get ushered to the front of the lines. He wanted to be like any other moviegoer."

Chaz, 61, is still learning how to get through the day without Roger. "At the nine-month mark, things are pretty raw for me," she admits. A widowed friend recently told her it gets more difficult, not less, at the one-year mark. "The first few months everything is so new and it's overwhelming, but the longer you're away from the person you love, the more difficult it becomes."