(written from a Production point of view)
- You may be looking for actor Christopher James Miller.
Christopher James Miller is a visual effects lighting and rendering technical director. He has been working with Industrial Light & Magic as a Lighting Technical Director on 2009's Star Trek since July 2008. 
Miller holds a Bachelor of Science degree in Aerospace Engineering from Boston University's College of Engineering. He also holds certificates in computer animation, modeling, and rigging from the Studio Arts training program in Los Angeles, California.
His first professional visual effects project was the 1998 DreamWorks animated film The Prince of Egypt, which featured the voice of Star Trek: The Next Generation star Patrick Stewart. He then worked on several films for Walt Disney Pictures, including Dinosaur (featuring the voice of Alfre Woodard), Atlantis: The Lost Empire (featuring the voices of Leonard Nimoy, Phil Morris, and David Ogden Stiers), and Treasure Planet (narrated by Tony Jay).
Miller also did effects work on Touchstone Pictures' live-action films Gone in Sixty Seconds and Unbreakable. He was later the Senior Shot Technical Director on the 2002 Warner Bros. film Scooby-Doo and did pre-production work on the controversial 2004 blockbuster The Passion of the Christ. Between April 2004 and November 2005, he was the Lighting Technical Director for Rhythm & Hues on the 2005 film adaptation of The Chronicles of Narnia: The Lion, the Witch & the Wardrobe.
Since then, Miller has worked on a trio of hit films from Warner Bros. Pictures. He was both a Lighting Technical Director and Digital Compositor on the 2006 computer-animated feature Happy Feet. He then worked as the Shot and Lighting Technical Director on 2007's Harry Potter and the Order of the Phoenix. Most recently, he was the Generalist Technical Director on The Dark Knight, the blockbuster sequel to Batman Begins.