Theatre demands different muscles and different aspects of one's personality.

Early life
Born in London Ontario Garber is of Russian Jewish descent; his parents were Joe Garber (died 1995) and wife Hope Wolf (an actress singer and the host of At Home with Hope Garber). In mid-2007 he played the role of Garry Essendine in a production of Noel Coward's Present Laughter at Boston's Huntington Theatre. In December 2010 for their annual birthday celebration to "The Master" The Noel Coward Society invited Garber as the guest celebrity to lay flowers in front of Coward's statue at New York's Gershwin Theatre thereby commemorating the 111th birthday of Sir Noel.

Garber is known for playing Jesus in Godspell John Wilkes Booth in Assassins Jack Bristow in the television series Alias Max in Lend Me a Tenor Thomas Andrews in James Cameron's Titanic and as Canadian ambassador to Iran Ken Taylor in Argo.