Well my username comes from Dickens' Great Expectations.
I find narrowing down my favourite authors is a bit difficult.
Dead people:
Shakespeare
John Donne
Alexander Pope
Henry Fielding
Jane Austen
Oscar Wilde
E.M. Forster
Virginia Woolf
T.S. Eliot
Elizabeth Bishop
Marianne Moore
T. Williams
Arthur Miller
Samuel Beckett
William Faulkner
Flannery O'Connor
Living People:
Anne Carson
Margaret Atwood
Alice Munro
Haruki Murakami
John Irving