If oil prices continue to move up, the small-cap oil plays should appreciate the most. McMoRan Exploration Co. (MMR) may see extraordinary appreciation. The CEO believes there is a huge reserve of oil in the Gulf of Mexico under where much of the shallow wells were drilled. The CEO is one of the world's great geologists, and has a multi-decade track record of finding significant natural resource reserves in places others never thought to look. The CEO is so excited about the opportunity that he personally purchased 500,000 shares at about this level in March, 2009. If his find is real, some analysts see MMR rising from $6 to about $100.