'Michael Clayton' (2007)

The underrated George Clooney-led morality tale (a much better morality tale than the George Clooney-directed 'Ides of March') features Tilda Swinton as the general counsel for U-North, a company that knowingly released a carcinogenic weed killer. She's the type of businesswoman who sweats profusely, nervously recites her speech in front of the mirror... and orders mob-style hits when she gets in over her head. (Spoilers, though you should have seen this one already.)