Just very simple PF 2006 animation I had to do for our little company. When discussing on PF form I suggested Blender animation. Overall time to finalise the project - 4 hours. I was really surprised how fast the Blender 2.40 rendered particles. I aimed to make final animation under 1MB.
Sorry that it has some kind of commercial character (logo of company) but as I have said it was primarily task in my job.