Frequently plays characters of a scientific nature such as doctors or professors.
In The Other Guys (2002), Billingsley plays a scientist with a fascination with Star Trek (his character states he
dresses up as a Vulcan at Star Trek conventions). In Star Trek: Enterprise (2001), Billingsley plays the medical officer Dr. Phlox, whose
shipmate is a Vulcan named T'Pol.
Born in Media, Pennsylvania, and raised in Weston, Connecticut.
[on playing Dr. Evan Royce in Unleashed (2003)] "It was fine. It wasn't a particularly fleshed-out part. Everybody was very nice, and treated me well. I had nothing negative to say but it wasn't something that was particularly memorable."