It is a fact universally acknowledged that geeks and teenage boys, left to themselves, will make awesome science experiments and upload the videos to YouTube. Who am I to not take advantage of this fact.
To get us started, watch what happens when you drop an object into superheated water:
Conversely, look what supercooled water does:
A simple party trick - whiskey and water changing places:
This is a Rubens Tube (dancing fire!):
Non-newtonian liquid on speakers (aka suicidal gloop monster):
Watch what happens when you run electricity through water:
Of course, it wouldn't really be a YouTube science roundup without Diet Coke and Mentos. Enjoy.