Actually, his new role was acting. Dunn did some acting as a bartender for the upcoming Matthew McConaughey movie "Dallas Buyers Club," which is due to hit screens this summer.
"It was fun," Dunn said from training camp on Wednesday. "I didn't realize how much work goes into a production like that. It was cool. It was fun. Those guys put in some long days."
McConaughey reportedly lost 50 pounds to play a character fighting to survive after being diagnosed with AIDS. At the time of filming, Dunn said McConaughey's weight was down in the low 130-pound range. He estimated the actor -- who Dunn said plans to visit Sox camp in about a week -- has put on at least 25 pounds since filming was completed earlier this year. Dunn said McConaughey's eating regimen was to suck on a lemon in the morning, drink sweet tea all day and eat a small portion of tuna for dinner.
"To see those guys in action, that was probably the coolest part of it," Dunn said. "To see how intense, how in-character they are 24-7. To be a good actor, I guess that's what it takes, so I'll never be a good actor."
Dunn was lured to the project through former minor league pitcher Joe Newcomb, who is involved in the company that is producing the movie. Dunn takes batting practice during the winter off Newcomb, who advanced as high as Double-A in the Toronto Blue Jays' organization during the 1980s.
"My buddy started it," Dunn said. "He's ate up with it. He's the kind of guy who's not going to half-do anything. He's going to do it right.
"It's probably going to look pretty awesome. We took like 20-something takes each time. I haven't seen the final product, so keep your fingers crossed. Hopefully, I made it."
Dunn said he does have speaking lines, but that his part of the film is a small one. He said his scenes took two days to film on location in Louisiana.
And leave it to Dunn to add some authenticity to his small part of the film. The designated hitter insisted that the bar he work behind was truly authentic, which meant that it had to be well-stocked with a wide array of spirits. The producers of the movie obliged.
Also starring in the independent film are Jennifer Garner, Jared Leto and Steve Zahn. So far, Dunn is not listed in the credits at the movie website imdb.com.