Simon,
if you want more volativity is traded options
i respect opitons, they more technically complex to trade, too many things can go wrong fundamentaly, the reason for the high volatility.
Major known currencies imo, do not change value so drastically.
options trading is something else, you really have to master the game real good.
a volatitly example that can leave you crying could be if you invest in MSFT and then Bill and company make a major mistake when releasing and much waited new product lets say .NET (not the best example) you never know.
Again knowledge is power if you know what's coming... and can master stock technical analysis you have an avantage.