(written from a Production point of view)
Donald Sage Mackay is an actor who played Shilat in the Star Trek: Enterprise first season episode "Oasis". He received no screen credit for this part. He filmed his scenes for this episode between Monday 28 January 2002 and Friday 1 February 2002 on Paramount Stage 8, 9, and 18.
Mackay is a stage and television actor who appeared in television series such as ER (2000), The District (2001, with Roger Aaron Brown, Vinny Argiro, David L. Crowley, and Richard Fancy), Malcolm in the Middle (2003, with Kenneth Mars and Benjamin Livingston), JAG (2003, with K Callan, Steven Culp, and Marco Rodriguez), The West Wing (2003, with J. Patrick McCormack, Steven Culp, and Timothy Davis-Reed), and House, M.D. (2007, with Vyto Ruginis). He had recurring roles in Providence (2001), Scrubs (2002-2004, with series regular Ken Jenkins), and the daily soap Passions (2001-2006).
Mackay played supporting roles in films such as Desert Saints (2002, stunt coordinated by Lou Simon) and The Story of Bob (2005), and lent his voice to the animated features The Swan Princess II (1997) and The Swan Princess III: The Mystery of the Enchanted Kingdom (1998, co-starring Steve Vinovich in both).