"Popwell was featured on many television series, but is perhaps best known for his appearances in films opposite Clint Eastwood, whom he appeared with in five films, beginning with "Coogan's Bluff" (1968) and in the first four of the five films in the "Dirty Harry" series, playing a different character in each film.Popwell was the wounded bank robber at the receiving end of Eastwood's iconic "Do you feel lucky?"