Alex Taggart - ER

Guest cast, played by Oliver Davis

Episode 10x05: Out of Africa (Oct 30, 2003)
Episode 10x06: The Greater Good (Nov 6, 2003)
Episode 10x07: Death and Taxes (Nov 13, 2003)
Episode 10x08: Freefall (Nov 20, 2003)
Episode 10x09: Missing (Dec 4, 2003)
Episode 10x11: Touch and Go (Jan 8, 2004)
Episode 10x14: Impulse Control (Feb 12, 2004)
Episode 10x15: Blood Relations (Feb 19, 2004)
Episode 10x16: Forgive and Forget (Feb 26, 2004)
Episode 10x17: The Student (Apr 1, 2004)
Episode 10x18: Where There's Smoke (Apr 8, 2004)
Episode 10x19: Just a Touch (Apr 22, 2004)
Episode 10x21: Midnight (May 6, 2004)
Episode 10x22: Drive (May 13, 2004)
Episode 11x01: One for the Road (Sep 23, 2004)
Episode 11x02: Damaged (Oct 7, 2004)
Episode 11x03: Try Carter (Oct 14, 2004)
Episode 11x04: Fear (Oct 21, 2004)
Episode 11x08: A Shot in the Dark (Dec 2, 2004)
Episode 11x17: Back in the World (Mar 24, 2005)
Episode 11x22: The Show Must Go On (May 19, 2005)

Guest cast, played by Dominic Janes

Episode 12x01: Cañon City (Sep 22, 2005)
Episode 12x02: Nobody's Baby (Sep 29, 2005)
Episode 12x10: All About Christmas Eve (Dec 8, 2005)
Episode 12x14: Quintessence of Dust (Feb 9, 2006)
Episode 12x16: Out on a Limb (Mar 16, 2006)
Episode 12x18: Strange Bedfellows (Mar 30, 2006)
Episode 12x22: Twenty-One Guns (May 18, 2006)
Episode 13x01: Bloodline (Sep 21, 2006)
Episode 13x02: Graduation Day (Sep 28, 2006)
Episode 13x03: Somebody to Love (Oct 5, 2006)
Episode 13x09: Scoop and Run (Nov 23, 2006)
Episode 13x12: Breach of Trust (Jan 4, 2007)
Episode 13x13: A House Divided (Jan 11, 2007)
Episode 13x14: Murmurs of the Heart (Feb 1, 2007)
Episode 13x16: Crisis of Conscience (Feb 15, 2007)
Episode 13x17: From Here to Paternity (Feb 22, 2007)