There is an interesting on-line article entitled "A Calvinist Looks at Orthodoxy" that I found online in the December 1988 edition of "New Horizons" (the magazine of the Orthodox Presbyterian Church). Written by Rev. Jack D. Kinneer, a Presbyterian minister who studied at St. Vladimir's Orthodox Theological Seminary (OCA) the article provides a unique insight in how Protestants view Orthodox Christianity.
Some of the authors critiques are quite accurate: many Orthodox do equate Orthodoxy with ethnicity (Byzantine Catholics do this, too). The doctrinal critiques seem to indicate that in his time spent at St. Vladimir's did not acquaint him with an authentic understanding our Faith. You can read it for yourself at:
http://www.opc.org/new_horizons/calvinist_on_orthodoxy.html Comments? Points for discussion?