PBS
Pbs: Martin Luther the Reluctant Revolutionary
Based on a PBS documentary on Martin Luther, this site describes the life of the great Protestant revolutionary. His efforts would change Medieval Europe as well as the dominance of the Catholic Church. Includes a fun interactive game...
The History Cat
The History Cat: Religion in Medieval Europe
Detailed description of the role of the Roman Catholic Church in the Middle Ages and the power that it wielded. Summarizes some of the customs and beliefs, and takes a look at the life of a medieval monk.