Pyro fireshooter lets you shoot fireballs from your hand. It is hard to imagine a social or work situation this would not improve, from job interviews to meetings to dates. Make sure to watch the insane (in many ways) video.
Early this morning, local time, two amateur astronomers independently captured images of something colliding with Jupiter. Anthony Wesley (cache) in Broken Hill, Australia noticed it first. Wesley spread the word and Christopher Go (cache) in Cebu City, Philippines also found that he'd documented the event, which occurred at 20:31 June 3, Universal Time. [more inside]
Cremora Explosion (courtesy of Mythbusters). Almost any fine, flammable material will make a nice fireball if ignited while dispersed. (for example: grain elevator explosions.) Mythbusters, as usual, take it to another level. Bonus: How to make your own. [more inside]
Fire in the sky - a meteor burns up somewhere over Western Canada. Really impressive video here, another video, TV news with more footage here.
Fireballs are not altogether uncommon. They are often associated with known meteor showers (and other times not). They are sometimes "earth crosser" asteroids, cometary debris, or simply man-made space junk. Sometimes they are extremely well documented. The March 7, 2003 Park Forest fireball/meteorite (pdf) was recovered and recorded by police car cameras: (AVIs: 1, 2, 3) Perhaps the most incredible is the one that got away on August 10, 1972. Recorded by many still and movie cameras as it was seen in daylight over the Grand Tetons, it was also recorded by a previously secret satellite during it's 1-1/2 minute skip off the earth's atmosphere. See also: How to observe, and report fireballs.