This is just a short, and quite low resolution animation that I have been messing around with to try and get to grips with animating multiple parameters. I used cloud for the falling snow and one variation of my snow shaders set(available in file sharing forum).
I've only really ever animated one or two parameters at a time before when I've played around in TG, like cloud warp settings or sun behind clouds etc. I thought it was about time I got stuck in and learneded myself something!
It doesn't look much, and it's short, but for me(and my poor computer) it was quite the task! I wanted to see how my snow shaders piled up over time. I'm happy at how they work, I wish I could make it longer and bigger(Ohhh, Matron!) but, I guess that'll have to wait until I'm somewhat richer. This was over 16 hours rendering 300 frames.

Not including an extra 70 frames that were binned and re-rendered due to a nasty, sharp altitude constraint I had set up first time round.
Anyway, be gentle, I've never really taken a serious attempt at TG anim' before. The ground covering is a little abrupt.
http://www.vimeo.com/11672106And, thanks for looking!