Famous Adherents

Links to lists of famous adherents of different religions (not necessarily only religious leaders): Famous Christians, Muslims, Zoroastrians, and Unitarians.
http://www.adherents.com/adh_fam.html

Spiritual Stars of the Golden Age

Gives biographies of adherents and adepts of religions, mystics, monks, saints, spiritual teachers, heroes and anti-heroes from different religions.
http://geocities.com/ganesha_gate/

Gurus--Good, Bad and Bogus

An introduction to a dozen contemporary spiritual teachers and masters, including Blavatsky, Gurdjieff, L. Ron Hubbard, and Sathya Sai Baba.
http://www.kheper.net/topics/gurus/index.html

Writings of Joseph John (JJ) Dewey

J.J. Dewey synthesizes inspired wisdom from East and West, Christian and New Age, Religious and Secular.
http://www.jjwritings.com