Caught that too. The flashes seem to originate from ground level. Missiles firing at the object?
In the fourth video, you can see either the flashes bouncing off of a reflected surface or maybe the source or shaft of light. It’s just to the right of the object.
No idea, but one thing that comes to mind if it is a powerful laser, is overheating or an object inadvertently entering the beam and disintegrating. If ET, maybe powering up or communicating or scared off by something (photography, gunfire, etc)?
It's certainly an interesting object whatever it is. Did you notice the pulsation in the first video? Not sure if that is a camera issue or a characteristic of the object.
For what it’s worth, I noticed a game on ITunes for the Iphone that involves recording a UFO against real locations backgrounds. In otherwords, the game generates a UFO that shows on your Iphone camera/video as you record a scene (your backyard, the city skyline,whatever). You get points for keeping the UFO in the frame as it moves around erratically. Then you’re supposed to email the video to your friends to freak them out. Don’t remember its name but I wonder if these videos could be from that game?