Myself, and a few friends went on a small run last weekend. When we first arrived, things weren't looking good because the ground was frozen solid, but about 10 minutes into the trail the sunshine showed and made some great muddy fun!

http://s27.photobucket.com/albums/c180/uncivilized121/Myra%204-15-07/?action=view&current=firstrun.jpg&slideshow=paused&interval=3

There's a video too, but I can't get the link right now, I'll add it later tonight at home. For now, if you're interested, search "powel24" on youtube.