Frodolivesin.us – The link goes to a series of essays about the Catholic aspects of Tolkien’s masterpiece. There are many other articles and other fun stuff there too.
Was Tolkien an Evangelist? – Blog post by Fr. Dwight Longnecker
Rings of Love: J. R. R. Tolkien and the Four Loves – Essay on the meaning of love as shown in the Red Book. See also this one on the same topic.
Mythgard Institute – Get a Master’s Degree by studying Tolkien and others. Yes!
The Ring and I by Chris Utley – Great essay that we are all Ring-bearers of one kind or another, carrying our own Ring, which we cannot bear to destroy but must. A beautiful tribute also to those who will aid in our quest to do so.
Tolkien Britta – Britta Siemen’s Tolkien/Middle-earth site
Middle-earth and J. R. R. Tolkien – Blog by Michael Martinez