Victor Joseph Garber (born March 16, 1949) is a Canadian-American actor and singer known for his work in television, film, and theatre. He started his career on the Broadway stage playing: Jesus in Godspell; Anthony Hope in Sweeney Todd: The Demon Barber of Fleet Street; and John Wilkes Booth in Assassins. He would later go on to earn four Tony Award nominations for his performances in Deathtrap, Little Me, Lend Me a Tenor, and Damn Yankees. Garber is also known for his film appearances in the comedies Sleepless in Seattle (1993), The First Wives Club (1996), and Legally Blonde (2001). Garber earned three Screen Actors Guild Award nominations for his performances in the historical drama films Titanic (1997), Milk (2008), and Argo (2012). Garber is also known for the role Jack Bristow in the television series Alias as well as his appearances in Law & Order, Frasier, Modern Family, Glee, Nurse Jackie, Louie, The Good Wife, Damages and Schitt's Creek. He was a series regular on Legends of Tomorrow as Dr. Martin Stein, having previously played the same role in a recurring capacity on The Flash and on the web series Vixen.