7. Robert Sean Leonard
Robert Sean Leonard popped up all over the place in the late 80s and early 90s. He was never really one of the brat pack, having never worked on a project with John Hughes, but he was a consistently recognizable face during that time period. He frequently starred as a sensitive teenager, coming off as a bit of an outsider but never straying into Anthony Michael Hall nerd territory. Leonard was the charismatic heart in films like My Best Friend is a Vampire and Dead Poet's Society, and he even held his own against Kenneth Branagh and Emma Thompson in their adaptation of Shakespeare's Much Ado About Nothing. So what's happened to him since then? Short answer: a lot of made for TV movies and supporting roles. Really, between the years of 1993 and 2003, the only project of note he was involved in was Tape, an indie film reuniting him with his Dead Poet's Society co-star Ethan Hawke. But then in 2004, he was cast as Dr. Wilson on House, and everything changed. He was the perfectly consistent, even-tempered John Watson to Hugh Laurie's mercurial Sherlock Holmes, proving to audiences everywhere exactly what he was capable of.