i can see that alot of people like animation/physics etc. if you like that kind of stuff you should check out endorphin. animation software and in my opinion the best one out (better then 3d max IMO).

http://www.naturalmotion.com/

som vids:
http://www.youtube.com/watch?v=vBTGWv2NBJU
http://www.youtube.com/watch?v=zDk-ZliFzIg

cool stuff