This is really cool:
This german site has a neat plug-in to import blender fluids into Lightwave.
http://www.splotchdog.com/index.php?option=com_content&task=view&id=54&Itemid=39
UPDATE:
Here is the english version of the page:
http://www.splotchdog.com/index.php?option=com_content&task=view&id=55&Itemid=39
