Why Detective Frank Cosgrove From Law & Order Looks So Familiar

John F. Kennedy was larger than life when he was president in the early 1960s. He captured the imagination and love of the entire nation. The circumstances around his death only increased the fascination and intrigue surrounding him, and that has translated into numerous movies, documentaries, and miniseries. Jeffrey Donovan added his name to the list of the many actors who have portrayed the former president with the Woody Harrelson-led biopic of his vice president, "LBJ."

In an interview with The Hollywood Reporter, Donovan talked about the difficulty of changing between very distinct accents from "Fargo" to "LBJ," saying, "I credit my dialect teacher, Deb Hecht. She helped me find the Dodd way of talking in that Minnesota Fargo accent, and then I had to break out of that to do Kennedy and to say that they're opposites is an understatement. ... What I had to do was completely change the way I physically made sounds, and when I first started to do that Kennedy speech, it sounded very Dodd-like. (Laughs.) It was so bad. I had a bad Fargo accent doing Kennedy. No one really wanted to hear it, my wife especially. She was like, 'Please stop talking like that.'"

"LBJ" wasn't the first time Donovan played a Kennedy. Five years earlier, he played his ill-fated brother, Robert, in Clint Eastwood's Leonardo DiCaprio-led "J. Edgar." In an interview with the Wall Street Journal, he spoke about how unique their accent was and how hard it was to capture it.