Overcharging Problems?

I got some videos...I have no clue where to look now...I replaced the alternator, I replaced the voltage regulator, and I've replaced the battery...

You can see what it does when the electric fans come on...

Seems to fluctuate an awful much...any idea on what can be happening?

[ame="http://www.youtube.com/watch?v=1BWO6ZCLZYc"]‪Charging Problems‬‏ - YouTube[/ame]

I would think the battery would get hot and boil over? I've been driving with this problem for a few months now...