Affect and effect both have different definitions when used as different parts of speech. I know. Confusing. Here is the distinction, as clearly as possible...
Affect (verb): to influenceAffect (as noun, stress 1st syllable): way of being
Devon (the landlord) is funny because of his hilarious affect. His affect affects us.
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Effect (noun): result
Effect (as verb): to create
The effect of Devon’s affect is comedy. It affects us by effecting (that is, causing) laughter in us.
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Key and Peele's acting affects us: the men imitate the affect of many different kinds of people in order to create an effect. They hope through their satire to effect change in society.
Key and Peele's acting affects (v. influences) us: the men imitate the affect (n. way of being) of many different kinds of people in order to create an effect (n. result). They hope through their satire to effect (v. create) change in society.