"suji wa dokushin ni kagiru"

Greek? Latin? Neither- its Japanese meaning "the digits must occur only once" and SuDoKu is its acronym. And now I have the latest....

It started with an innocent looking 10 page booklet that I grabbed at a Borders in San Jose airport some 2 yrs ago. Then the collection grew to Sudoku books ranging from beginner's, easy, medium and tough.
and daily Newspaper puzzles
and then Web Sudoku
and then Jigsawdoku
and then yahoo groups Sudoku
and then iGadget Sudoku
Now Sudoku cube.

Its Shifoku(go figure this one :p)!