Another conversation with IMDb:

• Them: Who's Sergio Leone?
• Me: You mean “The Good, The Bad and the Ugly” guy? 
• The ... what? No no no, I'm talking the “Once Upon a Time in America” guy.
• Oh sure, he directed that, too.
• DIRECTED? Leone's not known for DIRECTING. He's a WRITER!
• Really? I thought people thought of him as this great Spaghetti western director or something.
• Shows what you know. He only directed like nine things. And he wrote 16. Ergo, he's known for writing.
• Well...
• And that other thing? “The Good, The Bad and the Whatever” you talked about? I don't know where you get your movie knowledge. “Duck, You Sucker!” Now that's the ticket.
• I guess?
• Believe you me.

As the great man said in better circumstances: And it just continues...