This story, in the mainstream press, is a perfect example of everyone here should do whatever you can to discourage absinthe fire stunts.
Posted in NY Daily News:
From the WS FAQ # 8
At no time in the history of absinthe, until the late 1990's, has the
“Czech Method” of lighting absinthe-soaked sugar on fire—recently
popularized in the movies From Hell, Moulin Rouge, and Alfie—ever been
used. This is a modern innovation and a pointless abuse of good
absinthe. Aside from spectacle, it has no effect whatsoever except
possibly that of introducing a burnt-marshmallow taste to the absinthe
thus obscuring the delicate herbal nuances and ruining its flavor.
No one who knows anything about absinthe and its history would use
this method. Compare it to shaking a bottle of champagne. Given the
high-proof nature of the liquor it can also be very dangerous, resulting
in a cracked or broken glass, injury and accidental fire.