James Francis Cagney was an American film actor most famous for gangster roles in the
1930s and
40s, as well as for his
alleged catchphrase. He starred in some of the best gangster pictures ever made, including
Angels With Dirty Faces, White Heat, The Roaring Twenties, and
The Public Enemy, which is
unfortunately mostly remembered for a scene in which he
shoves half of a grapefruit into a woman's face.The Other Wiki has more to say
here.
Tropes associated with James Cagney include: