I have the luftfhansa business card gold which earned me already a lot of intercontinenal first class flights but that card is of no use for you as you are not in europe.
You might want to check out Flyertalk
http://www.flyertalk.com/forum/
Some threads that might be of interest for you:
http://www.flyertalk.com/forum/showthread.php?t=7186
http://www.flyertalk.com/forum/showthread.php?t=8115
Collecting Miles and Points can become an addiction. You might end like the Pudding guy ;)
http://www.flyertalk.com/pudding.htm
I hope it's ok to post links to a nonadult board.
Mike