Best example I heard was in an F# talk. The guy used a bar tending analogy:
FP => I'll have a Sazerac
Imperative => Excuse me sir, could you take some ice, add rye whiskey, add bitters, add absinthe, shake, strain into a glass, and add a lemon garnish before bringing it to me
FP => I'll have a Sazerac
Imperative => Excuse me sir, could you take some ice, add rye whiskey, add bitters, add absinthe, shake, strain into a glass, and add a lemon garnish before bringing it to me