If classic movies like Glengarry Glen Ross (1992), Tin Men (1987), Used Cars (1980)—or more recent hits like Wolf of Wall Street (2013)—have taught us anything, it’s that sales is not for those of a weak disposition.

And whether the character portrayal is ruthless and intimidating like Alec Baldwin’s Blake, broadly comedic like Danny DeVito’s Ernest Tilley, or charmingly sneaky like Kurt Russell’s Rudy Russo, movies have also suggested that salespeople need to be either pushy or conniving to achieve success.