Sunday's celestial event is what's known as an annular solar eclipse, in which the moon blocks most of the solar disk but leaves a ring of sunlight blazing around the moon's circumference.
At maximum exclipse you'll be able to see little crescents in shadows as the lighting changes. This should reveal some wonderful photo opportunities.
The full "ring of fire" effect will be visible to observers in parts of eight states in the western United States during the late afternoon and evening Sunday. Much of the rest of North America will be treated to a partial eclipse.
One of the sites offering live coverage today is The Slooh Space Camera
"The western United States will enjoy bizarre solar effects that only occur every few decades. In the annularity path, which will be about 147 miles (237 km) wide when hitting our shores, the black moon will stand like a bull's-eye in front of the sun, its motion through space in-your-face obvious," said astronomer Bob Berman, who will be a commentator on the Slooh Space Camera webcast, in a statement.