LivingWaters.com Produced by Ray Comfort and Kirk Cameron, this site provides a biblical approach to evangelism emphasizing the use of the Law in evangelism. Most notably the sermon, Hell's Best Kept Secret, should be heard at least once.
The Bible Bulletin Board Full text sermons by John MacAurthur, Charles Spurgeon, Johnathan Edwards, George Whitfield, J.C. Ryle and Thomas Watson. Excellent index: search by verse, topic or author.
The Reformed Reader A collection of articles on Historic Baptist beliefs. This site contains links to many online books and sermons concerning the basics of Reformed doctrine.
Eternal Life Ministries Offers free Reformed literature and tapes by pastors and teachers such as Charles Spurgeon, the Puritans (including Richard Baxter, John Bunyan, Jonathan Edwards, John Flavel, and Thomas Watson), Martyn Lloyd-Jones, Jay Adams, Sinclair Ferguson, Albert Martin and others.