Cast Credits Alcatraz (2012) Guest starring as Silver Episode 1x04: Cal Sweeney (Jan 30, 2012) [Co-Star] Once Upon a Time (2011) Guest starring as Skinny Man Episode 1x14: Dreamy (Mar 4, 2012) [Co-Star] Millennium (1996) Guest starring as Gravedigger Episode 3x20: Nostalgia (May 7, 1999) [Co-Star]