Slow Motion Mentos and Soda

Have not posted in while in part because I have been busy developing demos.  The addition of Mentos to soda is well known so I will not go into it in too much detail. Basically, the physical and chemical makeup of the shell of the Mentos helps the carbonation to quickly leave the soda, causing a fountain to rise up out of the bottle.  I have attached a slow-motion video taken by Karen Dismang (using an iPhone5s) of Ben Hendrix doing this demo.
 I have a couple comments:
1) Powdered Metamucil and other substances can cause soda to fizz  - although Mentos work really well.  Half of a roll of Mentos (seven candies) is enough to do the job. Not long before Mentos and soda was a "thing", it seemed that there were videos of ice cream and soda going around where someone would eat a bit of ice cream and then try to drink soda - perhaps similar chemistry?
2) Any soda or carbonated water should work.  The color of the fountain will depend on the color of the soda.  Tonic water fountains can be made to fluoresce with UV light (although one must be careful not to get the soda into the electrical fixtures).  For indoor demos, I recommend  using colorless soda, as I accidentally permanently stained a classroom ceiling tile with dark-colored soda. (Thankfully, the teacher thought it was funny.)
3) Use a diet soda.  Sugary sodas can be sticky to clean up.