Any kind of rhyming couplet ends Shakespearean, doesn't have to be heroic The Shakespearean (or "English" or "Elizabethan") sonnet ends with a heroic couplet.
The villanelle
The physical shape of the poem is strongly tied to the ideas expressed.
Poetry that does not conform to a traditional structure
A poem about having trouble sleeping
It is the effect the poet wants the poem to have.
The ideas the poem expresses