We were talking about Australian players a while ago; here's one who has only started to get a little press, but could turn out to be very good:
Nineteen-year old Justin Huber, a power-hitting catcher currently at Capital City, had already been considered a decent prospect for a while, but seems to be putting everything together now. Keep an eye on him. He won't be helping anybody's fantasy team this year (the Mets kind of like that Piazza kid at catcher), and presumably not next year either, but he could turn into a good one down the line. Huber is still raw, and his defense needs work (including throwing would-be base-stealers out), but his bat speed and strength are phenomenal.
The Mets have some decent catchers in their system, so a trade or position switch might be in the cards for Huber, but that's still speculation at this point. The Rockies, Blue Jays and Dodgers were also interested in signing Huber.