Pet peeve of mine: Teresa was not necessarily the greatest person to walk the earth. From her Wikipedia entry ( http://en.wikipedia.org/wiki/Mother_Teresa ):

She has been praised by many individuals, governments and organizations; however, she has also faced a diverse range of criticism. These include objections by various individuals and groups, including Christopher Hitchens, Michael Parenti, Aroup Chatterjee, Vishva Hindu Parishad, against the proselytizing focus of her work including a strong stance against abortion, a belief in the spiritual goodness of poverty and alleged baptisms of the dying. Medical journals also criticised the standard of medical care in her hospices and concerns were raised about the opaque nature in which donated money was spent.