Mentos and Diet Coke

So there are several of these videos out there where people dump a bunch of Mentos into a 2 liter of Diet Coke which then creates a geyser of soda I'm sure you may have seen one and if not, they are like the following:




But of course that was just the beginning... I have yet to try this out, but when I do, I think I will try to replicate the way these guys are doing it: