A couple interesting links for scripters:
A couple weeks Andrew Linden gave a talk on how Havok 4 works at SL Views. I posted my notes (Might be good to take a look if you're going to Andrew's office hours tonight):
http://forums.secondlife.com/showthread.php?t=214174
Also, since it looks like LL are never going to fix their forums so we can have code formatting, I posted to a code library on Neil & Nephi's SL forum:
http://www.lucidmovement.com/forum/showthread.php?t=329
Enjoy