Another huge purchase has been made at this year’s Sundance Film Festival and it’s for Lisa Cholodenko’s The Kids Are All Right. The film puts a new twist on the concept of family reunions with the help of an amazing cast including Academy Award nominees Annette Benning and Julianne Moore.

In the movie, two teenage children conceived through artificial insemination get the urge to seek out their birth father and introduce him to the family life that their two mothers have built for them. Once the donor is found, the household will never be the same, as family ties are defined, re-defined, and then re-re-defined. Mark Ruffalo stars as the unsuspecting father, and Alice in Wonderland actress Mia Wasikowska and Journey to the Center of the Earth‘s Josh Hutcherson are featured as the inquisitive teens.

Following its acclaimed world premiere at the 2010 Sundance Film Festival, Focus Features has acquired domestic and select international rights (the U.K., Germany, and South Africa) to the film. The announcement was just made yesterday by Focus Features CEO James Schamus. The movie was produced by Gilbert Films’ Gary Gilbert and Jordan Horowitz, Antidote Films’ Jeffrey Levy-Hinte, Mandalay Vision’s Celine Rattray, Daniela Taplin Lundberg, and UGC PH’s Philippe Hellmann.

Another diamond in the rough has been picked up for general distribution, who knows what other Sundance entry will find its way into the hands of a major studio.

What do you think about The Kids Are All Right being picked up at Sundance? Do you think it’s worth it?