I love how everyone is getting scared the Greece's economy has gone belly up. It has dropped the overall value of stock, but remember it is only temporary. You can actually make quite a bit if you were to find a stock with a moderate amount of volitility and ride it out of the scandal. The market will recover no problem. All things being said and done: you should probably target the small cap stocks for the biggest returns; the growth/blue chips for the steadiest returns.
Buffett said it best, "Be greedy when others are fearful and fearful when others are greedy". There is a ton of money that can be made during the next few days; might as well start shoveling.