This scene struck me as just too funny!

When Tom arrives in Hollwood to talk with "Woltz" in letting Johnny Fontane star in his war film.

Woltz---Now listen to me,you smooth-talking son-of-bitch!
Let me lay it on the line for you and your boss, whoever he is. Johnny Fontane will never get that movie! I don't care how many-daigo guinea WOP greaseball gumbahs come out of the woodwork!

Tom- I'm German -Irish...Well let me tell you something my Kraut Mick friend, I'm gonna make so much trouble for you, you won't know what hit you!

Tom----Mr. Woltz, I'm a lawyer, I have not threatened you.

Woltz---I know almost every big lawyer in New York, who the hell are you? (I- just -love- it!- WHO THE HELL ARE YOU?) ROTFL