Ultimate Mentos & Diet Coke?

There's been this buzz over the urban myth of Diet Coke and Mentos that is quite literally exploding and reaching critical mass. I just heard it mentioned in a CNN segment on YoutTube, which means it's now officially crossed over from Internet phenom into mainstream media.

I've read and heard about the buzz, but hadn't actually seen it. So I hopped over to Google video and found this clip:

http://video.google.com/videoplay?docid=-1450915772177922792

Hmmm... looks like it isn't a myth. But that's merely one person. It could be faked. So I hopped over to YouTube and found a whole bunch of clips here:

http://www.youtube.com/results?search=mentos+diet+coke&search_type=search_videos&search=Search

Take your pick. But several people have pretty much proved that it's true: Mentos and Diet Coke are and explosive combo!

Still not satisfied? Well here's a Pepsi variation of the theme:

http://video.google.com/videoplay?docid=-8694244338798619086

And then finally, I don't think anything could top this one. (Feel free to prove me wrong) If you've seen the Bellagio fountain in Vegas, then you might think that this might give it a run for it's money:

http://eepybird.com/dcm1.html

So of course, all this linkxploration leads to a few mind boggling questions:

1) Is this good advertisement and PR for Coke, Pepsi or Mentos?
2) How would you deal with this if you were doing PR for Coke, Pepsi or Mentos?
3) Having seen what you've seen, would you drink a Diet Coke and have a few Mentos?
4) How many more variations of the theme will emerge (Pop Rocks & Coke anyone?) or has this phenom hit critical mass and will be so 5 minutes ago in 5 minutes?

OK, I've waisted enough brain cells on this inane topic. What silly times we live in.