By Margeaux Watson
Updated November 27, 2008 at 12:00 PM EST

As we celebrate Thanksgiving today, it is important that we not forget the less fortunate. That’s why I am encouraging you to check out Madonna‘s upcoming documentary, I Am Because We Are, when it premieres on the Sundance Channel on World AIDS Day, Dec. 1, at 9 p.m. It’s not a celebrity vanity project; it’s a provocative call to action. Written, produced, and narrated by Madonna, who wisely remains unseen for the most part, the film humanizes the plight of AIDS orphans in Malawi, the birthplace of her adopted son, David, where more than one million impoverished kids have lost their parents to the deadly disease. Though I Am contains many disturbing images of death, pain, and suffering that are often difficult to watch, it’s impossible not to be moved by the stories of children whose lives have been marred by such crushing hardships. Here’s a preview clip.