There are plenty of reasons to go see "Hit & Run," Kristen Bell and Dax Shepard's new R-rated action comedy, and they include, in no particular order: muscle cars, pretty Bradley Cooper disguised as a not-so-pretty bad guy, a romance sort of based on Bell and Dax's real-life love, etc.

Also, the film showcases Shepard's talents as an actor and director, a fact that had his star and lady love quite distracted on set.

"He was so cute directing because he wore this big cowboy hat and he always had a pair of cans [industry speak for "headphones"] on, you know where you can hear the audio and I was sort of half really excited to work with someone that I creatively trusted as much as [him], and then half just really beaming with pride like, 'Oh my god, look at how cute he is!'" Bell gushed, adding that his method for calling 'Cut' was particularly adorable.

"This is my official cut symbol," Shepard said while demonstrating the circular "rolling" motion with his hand. "This typically means 'rolling,' but I flipped it on its head and I'd go "CUT!" [making the 'rolling' sign] and then I'd go "ACTION!" which he demonstrated by making a cutting motion with his hand, as if it were a pair of scissors.

Despite the joking around about Shepard's amateur director's motions, this wasn't his first-ever feature film, just the first one with a big budget.

"I had made a movie for nothing, like $5,000 bucks a couple years beforehand and all my friends were nice enough to be in it ["friends" like Ashton Kutcher, Tom Arnold, Jon Favreau and Bradley Cooper], and I don't know whether they thought it was a good movie at the end of the day, but I do deliver a really good time," he said.

"It was a very good movie," added Bell. "It's called 'Brother's Justice.' It's really funny."

"Yeah, and if you work with us on our set, it's a really good time," Shepard said. "I think people were mostly drawn into just like the hanging-out-together aspect of it."

"We're full-time actors, part-time party pumpers, so it's not a lame set," said Bell.

"You might even have that backwards, we might be full-time party pumpers, part-time actors," Shepard corrected.

Do you think Kristen and Dax have the same on-camera chemistry as they do in real life? Let us know in the comments!