A huge fire, made with Synfig (Open Source animation), for the "Fire!" challenge.
Not the real inferno... but quite like it! Turn the sound up to get in the mood.
Fire sound by Dynamicell.
Fire! - http://synfig.org/forums/viewtopic.php?f=17&t=1150
Synfig - synfig.org/
Dynamicell - http://www.freesound.org/samplesViewSingle.php?id=17548
Inspired by http://www.911tutorials.com/tutorials/Photoshop/Animation/Seamless-Fire-Animation_96.html