Foa will play a "computer dork" who hacks into the Department of Defense's computer system on the March 6 episode of the TV series. "Numb3rs" airs in the New York metropolitan area on WCBS-TV Channel 2 at 10 PM ET; check local listings.
Foa, according to a mass e-mail, will also guest star on two episodes of another CBS crime drama, "NCIS: Naval Criminal Investigative Service."
Barrett Foa made his Broadway debut in Mamma Mia! and later played both Rod and Princeton in the Tony-winning musical Avenue Q. The singing actor was part of the all-star Children of Eden benefit concert, and his other theatrical credits include Godspell, Cupid and Psyche, Much Ado About Nothing, Camelot, Kept, The Fantasticks and Gypsy. Foa is a graduate of the University of Michigan musical theatre department.