Roman and Greek numerals

Those who have difficulty reading Roman numerals will likely appreciate Bob Baird on "Countdown to XXXIX," in which he discusses the big change forthcoming in the numbering of Superbowl football games after this year. (Hint: an "L" is coming to join all the Vs, Is and Xs.) If people have trouble with Roman numerals, virtually everyone -- even a Byzantine-rite Calvinist -- finds it difficult to make sense of Greek numerals, which are used rarely in the west and even in the Greek-speaking world. I have several Greek Bibles in my personal library using this numbering system, but, apart from these, its use is obviously not widespread nowadays.