Free energy isn't really a possibility, per say, but one just needs to consider the viability of energy that one hasn't considered in quite a while. It was in the late 60s and early 70s that the Americans considered a type of nuclear power that involved Thorium-232, one of the most common materials on the planet. Research ended because Uranium was more efficient and could be used to create nuclear weaponry. Thorium can't be turned into weapons, requires less space and doesn't have quite the same hazards to it.

A couple of links:
http://en.wikipedia.org/wiki/Thorium-based_nuclear_power
http://www.thorium.tv/en/thorium_reactor/thorium_reactor_1.php

There are almost no other power sources on the planet besides oil and nuclear that can supply the needs of the growing population and oil won't last forever. If you want plenty of energy, at least slightly closer to free, Thorium might be the best bet.

Are you forgetting about one huge source this planet has? Water.

This guy also talked about using the Tesla coil in a way that the spark can get so big that once you throw water on it, that it can burn the water (using water to drive a car in other words).

But you can't burn water.  The process of burning involves taking something carbon based and adding oxygen to make CO2 and water.   There's no Carbon in water so you can't make CO2, and burning water to make water doesn't get you anything even if it was possible.  The only possible way I could see this work is if you somehow separated the water into H2 and O2 first, but that would require so much energy you might as well just use that to run the car directly instead of going in this circular route.  

Do you guys believe in free energy?

I worked with an old guy that was planning on running his house off batteries and magnets, basically. He found a way to recharge the batteries easily without cost and use to magnet generator to run his house. He showed me some prototype setups and was quite interesting, he proved that this even worked by showing me the contraption making a 12v battery put out 23v, just by hooking this spnning magnet thing up to the battery. If interested he provided many websites to me that I can give to you guys, I have yet to check them out thoroughly.

So do you guys believe it's possible to have free energy?

Is the goverment stoping people from using free energy?

What types of free energy do you know of and tried/use?

Would there one day be a world were we wouldn't have to pay big electric companies monthly bills just for electricity?

Not possible, nothing is free plus with any mechanical setup you loose energy through heat etc. The law of enthropy kind of sucks at time. You have to spend more energy to get more energy. Though there are ways to harvest some of the lost energy. My family is thinking of setting up a making a wind turbine by caniblizing a gas generator we have and hooking it to a wind mill set up. (A place near my work used an old bailer rake on the top of their barn to catch the wind.

Actually "burning" is just oxydation in any form you don't even need carbon. For example when you "burn" Hydrogen you get heat and water since the Hydrogen attaches to two Oxygen molcules. The problem is harvesting Hydrogen, currently the only way is to use electrolsis to force the Hydrogen away from the Oxygen. With the Tesla coil what is happening is first the water "electrolizes" and the heat from the arcing electricity ignites the excaping Hydrogen/Oxygen returning it to water. Basically its pointless. (Oh it takes more energy to spilt the water than what is generated when the Hydrogen is burned)