Are these former enemies now frenemies? The Dixie Chicks and Toby Keith are teaming up for a good cause, and the person bringing them together is none other than Al Gore.

The Chicks and Keith are set to appear together in a commercial for the Alliance for Climate Protection. It's a cause championed by the former Vice President, who designed an ad campaign featuring strange bedfellows such as the aforementioned feuding country stars, Democrat Nancy Pelosi with Republican Newt Gingrich, and the Reverend Al Sharpton with the Reverend Pat Robertson -- all pairs who've traded jabs in the past. Gore's goal is to prove that climate change is not a partisan issue.

The feud between the Dixie Chicks and Toby Keith started when Natalie Maines was quoted as saying that Keith's song, 'Courtesy of the Red, White & Blue,' made country music sound "ignorant." He fired back, saying she was a lousy songwriter. Keith then went so far as touring with a backdrop depicting Maines with Saddam Hussein, while Maines wore a T-shirt to the ACM Awards that read "FUTK." (No one believed that stood for 'Freedom, Understanding, Truth and Knowledge.')

So, is all of that just water under the bridge now? We'll see when the commercials begin airing on most major television networks later this month.