MythBusters Season One: Penny Drop, Buried Alive, Lightning Strikes/Tongue Piercing

Will a penny dropped from the top of the Empire State Building kill a person or penetrate the ground?
Can a person's internal organs be cooked by a tanning booth?
Can tooth fillings receive radio waves?

How long can you survive in an underground coffin?
Does Cola have special properties?
If a person is falling off a bridge, can they save themselves by throwing a hammer ahead of them to break the surface tension of the water prior to their own impact?

Is a person with a tongue piercing more likely to get struck by lightning?
Can a cannon be built out of a tree?
Can the breathalyzer be beaten through various methods?