This Kenyon College product earned his MFA in acting from NYU, and after a few small-screen and stage parts, Radnor stepped into Jason Biggs' shoes to make his Broadway debut in 2002 as Benjamin Braddock in The Graduate, opposite Kathleen Turner and Alicia Silverstone. The role jump-started his career, and he landed a number of TV guest appearances before winning attention as a lovelorn bachelor on the romantic sitcom How I Met Your Mother. A versatile performer, he wrote, directed and starred in the comedy Happythankyoumoreplease (2010), a well-received filmmaking debut that won the Audience Award and was nominated for the Grand Jury Prize at the Sundance Film Festival.