Strong is known for playing Jonathan Levinson on the television series Buffy the Vampire Slayer and Paris Geller's boyfriend Doyle McMasters on Gilmore Girls, but he has also appeared in films such as Pleasantville, Dangerous Minds, the spoof Shriek If You Know What I Did Last Friday The Thirteenth, and was in the film Sydney White as the Grumpy dork, Gurkin. Strong has also had guest parts in sitcoms such as Seinfeld, 3rd Rock from the Sun and Over the Top and has also guest-lectured in acting classes on finding a job as an actor. Most recently, Strong appeared in the popular AMC series Mad Men as Danny, a young man with no talent, trying to break into the advertising industry.