The Clinic Guest cast, played by Garrett Keogh Episode 1x03: Episode 3 (Oct 26, 2003) Episode 1x07: Episode 7 (Nov 23, 2003) Episode 1x08: Episode 8 (Nov 30, 2003) Episode 2x04: Episode 4 (Nov 7, 2004) Episode 4x01: Episode 1 (Oct 1, 2006) Episode 4x04: Episode 4 (Oct 22, 2006) Episode 4x05: Episode 5 (Oct 29, 2006)