Kevin Patrick Dobson (born March 18, 1943) is an American film and television actor, who is primarily known for his roles on television. His most prominent roles were as Detective Bobby Crocker, the trusted partner of Lt. Theo Kojak (played by Telly Savalas) on the popular 1970s CBS crime drama Kojak, and as M. Patrick "Mack" MacKenzie on the 1980s soap opera Knots Landing - a role he played from 1982 until the series ended in 1993.