I love World Creator, especially the vegetation distribution pipeline. You can create some very realistic fields with it. Im going to check out impostors too - ive seen it a few times and wondered what it's about.
Stupid Rental. My Zbrush that I haven't paid for an update in years and is perpetual Trumps that on all counts.
What is IndieCade
IndieCade organizes a series of international events. Those events showcase the future of independent games and let indie developers present their products. The goal of IndieCade is to publicize, encourage and push innovation in interactive media. This event is also used to promote games as culturally significant, diverse and rich.