my biggest caps are 8000 MFD at 80Volt (x2) in power supply for my amplifier... that's a fair few joules... but it's not the biggest ever...
which according to http ://www.electronics2000.co.uk/calc/caclchrg.htm is
25.6 Joules
Now your standard bottle of Classic Coke is 140 Calories
which works out as 1 cal = 4.187 J
so 1 coke = 586 Joules
so i would need about 23 of my power caps to equal the energy provided by one coke.
but i can (safely) discharge my capacitor in 11 (or less) seconds which works out too 25.6Joules/11sec=277.6 Watts
and i can't discharge a coke nearly so fast... (even if you shake it!
)
[edit:updated technical details]