Mythbusters: There's Your Problem
Fire & Ice
S1 E10:
The MythBusters first light up three fire-related myths, finding out who wins in a battle of flamethrower versus ice crystal gun; if wine bottles can cause a truck fire; and if a cannon packed with sawdust could produce a raging fireball. Then they flip the switch to "freeze" to discover: can a boat be built from ice? And could a functioning cannon be made from ice?