(written from a Production point of view)
Shea was cast as Keevan on 21 July 1997. For the Star Trek: Voyager episode "Think Tank", Shea filmed his scenes on Friday 15 January 1999 on Paramount Stage 9 with a makeup call at 7:30 am and a set call at 10:30 am.
Shea appeared in episodes of The Drew Carey Show (starring Diedrich Bader and John Carroll Lynch), The West Wing (with Bill Bolender, John de Lancie and Robert Pine), Charmed (with Simon Templeman and Wade Andrew Williams), Frasier (starring Kelsey Grammer), The Shield (starring Michael Jace, Jay Karnes, and Benito Martinez), Cold Case (executive produced by Roxann Dawson), The Practice (with Tony Amendola), CSI: Crime Scene Investigation (starring Wallace Langham and with K Callan), Studio 60 on the Sunset Strip (starring Steven Weber), Desperate Housewives (starring Teri Hatcher, Neal McDonough, Mark Moses, and Brenda Strong, and with Thomas Kopache and Kevin Rahm), and Til Death (with K Callan).
In addition to his television career, Shea has worked in a handful of films, including The Specials (2000, with Abdul Salaam El Razzac), All You Need (2001, with Robert Pine), and Leaving Barstow (2008, with Steven Culp and Scott Klace).
In addition to film and television, Shea has lent his voice to the video game The Beast Within: A Gabriel Knight Mystery on which he worked with Brad Greenquist, Kay E. Kuter, Andrea Martin, and Clement von Franckenstein.