If you have never seen a total eclipse of the sun before this is an excellent video, you can almost feel the temperature drop as the sun is covered by the disk of the moon. On Nov. 13, 2012, a narrow corridor in the southern hemisphere experienced a total solar eclipse. The corridor lay mostly over the ocean but also cut across the northern tip of Australia where both professional and amateur astronomers gathered to watch.
In the video you can watch as the sun disappears behind the disk and then reappears. When seen in person day turns to night and the temperature drop can be felt. While you should never look at an eclipse directly when seen with the correct safety measures the structure of the corona as it moves in the magnetic fields of the sun is interesting to look at.