**UPDATED 1/13/06: FIXED URL WITH NEW LINK FROM ALAN.
A while back I posted about a J# version of Peter Walser's original IDX3D engine. I recently received an email from Alan Simes reporting that he had done another port, this time to 100% C#. Check it out here. The screenshot below is one I created using Alan's port, and I must say it's VERY responsive even on my laptop. It spins around quite nicely which is both a testament to Peter Walser and to Alan. It's really neat watching these things evolve from one generation to another via ports and such. :-)
Another cool part about this is that Alan built it using the beta of Visual C# 2005, so if you wanted to compile this for yourself and you don't have Visual Studio you can download Visual C# Express edition from here.
Chris Williams has written another great article based on his Heroic Adventure! role playing game. This one is about giving your creatures (non-player characters, monsters, animals, etc.) an artificial intelligence engine to make them appear lifelike during the game. He goes into an amazing level of detail regarding the various factors and traits you'll want to consider tracking. Check it out: http://www.informit.com/articles/article.asp?p=400031&rl=1. Thanks, Chris!