F*ck You, Pay me – Everyone should watch this once per year (youtube.com)

Such a classic.

The original scene from Goodfellas is pretty good, too:

https://youtu.be/8L4HHPTiZN8?t=12

Harlan Ellison has a good take on it from a writer's perspective. The creative business is always trying to get something for nothing.

https://www.youtube.com/watch?v=mj5IV23g-fE