As the suave Don Draper, he cuts a sophisticated figure - impeccably dressed with a commanding presence as the creative genius behind advertising agency Sterling, Cooper, Draper, Pryce.
But Jon Hamm wasn't always as polished as his Mad Men alter ego.
New photographs of the star during his high school years show him looking rather goofy, sporting an array of 1980s fashions.
Goofy
look: Jon Hamm (centre) looks a far cry from his TV alter ego Don
Draper in yearbook photos showing him in goofy pose with baseball capAnother photograph features him larking around with a second group of school friends sporting baggy jeans, a puffy jacket and unlaced trainers - Don Draper would perish the thought.
And it seems the actor was also interested in sports - he was a classic jock and is pictured on the football field in full kit - he was apparently also on the baseball and swim teams.
Larking about: Hamm, pictured right, with classmates sporting a baseball cap, pale jeans and puffy jacket
While Jon spent most of his time catching and throwing on the various athletic teams, he dabbled a little in acting.
The Town star made his stage début as Winnie the Pooh and at 16-years-old, he was cast as Judas in Godspell while attending the private John Burroughs School in Ladue, Missouri.
He graduated from the institution in 1989, and was once described by sportscaster Joe Buck, who knew him in his teenage years as 'the cool guy in high school.
Buck told Men's Health back in 2010: 'He's not the before-and-after pictures where he was the nerd in high school with tape on his glasses. He was always the guy you noticed.'
All-American: Hamm pictured in high school as a football player in Ladue, Missouri
The actor told the Waterloo Region Record, in 2008: 'Acting was fun, but my grandfather would always tell me, "It's never too late to be an engineer."
'You were supposed to get a "job" and do acting on weekends or at school.'
After high school, Hamm attended the University of Texas until his father's untimely death when he was just 20-years-old. His mother Deborah passed away from cancer when he was ten.
Good memories: January Jones was a self-proclaimed hippie as a teenager, pictured in her high school yearbook
Young and free: January (R) worked at the local Dairy Queen growing up in Sioux Falls, South DakotaAfter graduating in 1993 with a Bachelor of Arts degree in English, Hamm returned to his high school to teach acting for two years before heading to Hollywood to pursue his larger ambitions.
But his Mad Men co-star January Jones could not have been more different during those formative years - as she identified herself as a hippie.
Hamm's former onscreen wife, January, grew up in Sioux Falls, South Dakota, and worked at the local Dairy Queen.
Success: The 35-year-old pictured at the Mad Men premiere in Los Angeles, in MarchHer father Marv reminisced with People magazine about his daughter's typical teenage years getting into harmless trouble: 'One night she went out the basement window. Our dog was barking, which got her caught. Next time, she tried taking the dog with her.'
After graduating high school, January headed to New York City to try her luck at acting and modelling.
She has said of the experience: 'Everything was a culture shock. The people were different, the sights were different, the food was different... I was experiencing a freedom I hadn't before.'
