Cyllan for sure, her landscape products (Terraformers series, Horizons, Weird Weather, Geoforge) are very innovative and changed the way I used poser a lot. I always depended on outside apps line Bryce and Vue to do my landscaping, but with Cyllan's prducts we can do it right within Poser now.

Artwork and 3DToons items, create the perfect place for you toon and other figures!

http://www.renderosity.com/mod/bcs/index.php?vendor=23722

Due to the childish TOS changes, I'm not allowed to link to my other products outside of Rendo anymore :(

Food for thought.....
https://www.youtube.com/watch?v=pYZw0dfLmLk