Anadarko Petroleum announced a massive $5 billion share buy back on Monday. The oil and gas exploration and production company's shares are beginning to look compellingly valued at present as management continues to pare back debt and ramp up capital spending.

The investing environment for oil & gas producers remains bullish in 2008, as record oil prices headline the news almost daily… and analysts see a lot more coming. Since Goldman Sachs predicted a two-year move to $200 in the commodity, people have had renewed confidence in buying up companies that deal with oil, and its cleaner alternative, natural gas.