He also appeared in propaganda films, debuting in "One of Our Aircraft Is Missing" (1942), in which he was required to deliver lines in English, Latin, and Dutch. In 1944, under the auspices of ENSA -->, he presented and performed the role of Sir Anthony Absolute, in Sheridan's "The Rivals", with Dame Edith Evans, at the theatre in Larkhill Camp, Wiltshire, England. After the war, he began writing; his first major success was with the play "The Love of Four Colonels" (1951). He starred with Humphrey Bogart and Aldo Ray in "We're No Angels" (1955). His career as a dramatist continued, his best-known play being "Romanoff and Juliet" (1956). His film roles include Roman emperor Nero in "Quo Vadis" (1951), Lentulus Batiatus in "Spartacus" (1960), Captain Vere in "Billy Budd" (1962), and an old man surviving a totalitarian future in "Logan's Run" (1976). Ustinov voiced the anthropomorphic lions Prince John and King Richard in the 1973 Disney animated film "Robin Hood". He also worked on several films as writer and occasionally director, including "The Way Ahead" (1944), "School for Secrets" (1946), "Hot Millions" (1968), and "Memed, My Hawk" (1984). In half a dozen films, he played Agatha Christie's detective Hercule Poirot, first in "Death on the Nile" (1978) and then in 1982's "Evil Under the Sun", 1985's "Thirteen at Dinner" (TV movie), 1986's "Dead Man's Folly" (TV movie), 1986's "Murder in Three Acts" (TV movie), and 1988's "Appointment with Death". Ustinov won Academy Awards for Best Supporting Actor for his roles in "Spartacus" (1960) and "Topkapi" (1964). He also won a Golden Globe award for Best Supporting Actor for the film "Quo Vadis" (he set the Oscar and Globe statuettes up on his desk as if playing doubles tennis; the game was a love of his life, as was ocean yachting). Ustinov was also the winner of three Emmys and one Grammy and was nominated for two Tony Awards. Between 1952 and 1955, he starred with Peter Jones in the BBC radio comedy "In All Directions".