Home People Jack Knight Jack Knight shows Jack Knight shows Jack Knight TV Shows (23) Heartland (2007) As Badger, He was 69 years old The Altar Boy Gang (2007) As Sean Gallagher, He was 69 years old Pepper Dennis (2006) He was 68 years old Blind Justice (2005) He was 67 years old Cold Case (2003) He was 65 years old Significant Others (1998) He was 60 years old Brooklyn South (1997) He was 59 years old Spin City (1996) He was 58 years old JAG (1995) He was 57 years old The Nanny (1993) He was 55 years old Cheers (1982) He was 44 years old Trapper John, M.D. (1979) He was 41 years old Friends (1979) He was 41 years old CHiPs (1977) He was 39 years old Charlie's Angels (1976) He was 38 years old What's Happening!! (1976) He was 38 years old Joe Forrester (1975) He was 37 years old The Jeffersons (1975) He was 36 years old Police Woman (1974) He was 36 years old Lotsa Luck (1973) As Bummy Pfitzer, He was 35 years old Emergency! (1972) He was 33 years old Mannix (1967) He was 29 years old Ironside (1967) He was 29 years old
