I grew up watching his films as a kid. My dad loved Cagney. Humphrey Bogart couldn't hold his water, and John Garfield was a wannabe. Drama, musical, comedy; what couldn't the little Mick do?
Here's a clip from The Public Enemy, where he swoons over Jean Harlow:
Here's an interview with him and Pat O'Brien:
Here's some scenes from White Heat, his last hit:
Here's the trailer for the same film:
Cagney kicked ass!