Current feature: Pascha
Past features (in reverse chronological order):
2006 December-July: Nativity, Theological School of Halki, Alexander Nevsky, Episcopi vagantes, Joseph the Hesychast, Eucharist, Alexander (Nemolovsky) of Brussels, John the Merciful, John (Shahovskoy) of San Francisco, Gabrielia (Papayannis), Fall of Constantinople, Seraphim of Sarov, The Ladder of Divine Ascent.
2005 December-July: Bede, Gregory Palamas, John Chrysostom, Filioque, Theotokos, Basil the Great, Autocephaly, Afterfeast, Old Calendarists, Orthodoxy in Australasia, Platon (Rozhdestvensky) of New York, St. Tikhon's Orthodox Monastery (South Canaan, Pennsylvania).
2005 June-February: ROCOR and OCA, American Orthodox Catholic Church, Ephrem the Syrian, Pascha, Timeline of Church History, Iakovos (Coucouzis) of America, Church of Antioch, Monasticism, St. Catherine's Monastery (Sinai), Paschalion, Mount Athos, Western Rite, Harold of England, Constantine the Great, Ligonier Meeting, Church of Romania.
To nominate an article, see this page or add a link under Nominated future features.