 Ferguson starred in the Public Theater's 2007 Shakespeare in the Park production of "A Midsummer Night's Dream" and 2015 production of "The Tempest".In the summer of 2015, he played Sir Robin in the Hollywood Bowl production of "Monty Python's Spamalot".In March 2012, Ferguson was featured as Dr. Ilan Meyer in a performance of Dustin Lance Black's play "8", a staged reenactment of "Perry v. Brown", the federal trial that overturned California's Proposition 8 ban on same-sex marriage.