At Patum Peperium, "Father M" (he really is; he's heard my confession before) weighs in with this piece on relics in his blogging place of residence: Ex Ossibus.
What's the deal with relics in the Catholic Church? New Advent has a fine introduction here.
But without a doubt, Fr. John Zuhlsdor gives us a most beautiful article relating realities of life, death, bones, relics and the resurrection in his The Bones of Augustine. Read and enjoy, good reader.