Kristin Chenoweth has boarded Columbia Pictures' "RV." Barry Sonnenfeld is directing the Robin Williams-starrer, which is being produced by Red Wagon's Douglas Wick and Lucy Fisher. The comedy follows a man (Williams) and his dysfunctional family who rent an RV and head for the Rockies, ending up in a campground community. Chenoweth plays Mary Jo, a stay-at-home business woman who sells products out of her trailer and a member of that community. Cheryl Hines is also cast. Original script was written by Geoff Rodkey. Lowell Ganz and Babaloo Mandel wrote the most recent draft. Chenoweth is known for her performance as Glinda the Good Witch in Broadway's "Wicked" but is not lacking in feature credits. Her upcoming films include "Bewitched" and "Pink Panther," and will appear in "Running with Scissors" with Annette Bening and Gwyneth Paltrow, and "Stranger than Fiction" opposite Will Farrell and Dustin Hoffman. Her CD "As I Am" was released on Tuesday. Chenoweth is repped by repped by CAA and manager Danielle Thomas.