This is one of those things you can take or leave at your discretion.
At a community bonfire and prayer gathering held near Wadowice in southern Poland to commemorate the second anniversary of the passing of Pope John Paul II, a local shutterbug snapped a bunch of pictures. In one of them, taken at 9:37 PM, April 2, 2007 (two years to the minute after he died) the flames appear to show the form of the late pontiff, arm outstretched in blessing.
Click here for the image.
This photographer shot a lot of pictures that night, and apparently the rest of them showed just a regular bonfire. Only in this one does anything other than the random shape of flames appear.