Renee Zellweger is giving ET the 411 about her fun new period comedy, 'My One and Only.' "It was very satisfying both creatively and on a personal level," Renee said of making the movie, in which she plays a 1950s mom of sons who hits the road looking for a rich man to take care of her and her family. The film was inspired by stories that actor George Hamilton told the late entertainer Merv Griffin about his young life. Kevin Bacon and Chris Noth co-star, while Hamilton served as executive producer. "One of the most fun parts of this experience was discovering that this was based on [George’s] life experiences," Renee said. "'Cause it's a great story. I mean, it's so much fun — you attach to these characters immediately because they're just clever and witty and the banter between them is so unconventional that you just kinda want to see where it goes. It was a page turner for sure. And [the screenwriter] Charlie [Peters is] such a magnificent writer, I just couldn't wait to see what was next ... and then the revelation at the end that this is how he came to become an actor, quite accidentally? I mean, it's just fantastic!"