High Quality Content by WIKIPEDIA articles! Wallace Langham (born March 11, 1965; Fort Worth, Texas) is an American actor who has been seen on many television shows either in guest roles or starring roles. He is probably best known for his role as David Hodges in the American crime drama television series CSI: Crime Scene Investigation.Formerly billed as Wally Ward, Langham first got his start in the John Hughes movie Weird Science, as well as in The Invisible Kid and the ABC Afterschool Special entitled Just a Regular Kid: An AIDS Story, but later moved to roles as a young bigot in Soul Man and as a gang leader in The Chocolate War. He appeared in the Eddie Murphy comedy Daddy Day Care and was last seen on film in the comedy Little Miss Sunshine. He also starred in Combat High (1986) (TV) (as Wally Ward) .... Percival 'Perry' Barnett.