Just thought I would share this little thing I was introduced to by a friend.
Its a liquid physics simulator written in Java.
Apparently its creator, Grant Kot has been playing around with particles for some time. Theres more of his work on youtube, here is one:
Edit: Didnt realise but this is the same guy that did Polluted Planet that I covered almost 3 years ago -> http://mikecann.co.uk/fun-videos/polluted-planet/ thats some awesome particle based dedication right there, I think I need to buy him a beer