I will be updating this post every week or so for organizational purposes. For now, here is what has happened in the past 13 trading days:

February 11th (Wednesday) - Oil falls $1.62 to $35.94 a barrel
The reason: A weekly report from the Energy Information Administration revealed a larger-than-expected increase in crude inventories for the week ended Feb. 6. Supplies rose 4.7 million barrels which surpassed the average analyst estimate of ~ 3 million. Crude inventories have gained in 18 of the past 20 weeks. Lack of demand much?

February 12th (Thursday) - Oil slips $1.96 to $33.98 a barrel
The reason: Investors are worrying that inventories will continue to increase due to the overall lack of demand. This is the fifth consecutive day oil has been down.

February 13th (Friday) - Oil shoots up $3.53 to $37.51 a barrel
The reason: The House approved Obama's economic stimulus package today as investors hope this can revitalize demand.

February 17th (Tuesday) - Oil tumbles $2.58 to $34.93 a barrel
The reason: Gloomy data around the globe continues to weigh on investor sentiment. Japan reported Monday that it is suffering its worst economic downturn in 35 years.

February 18th (Wednesday) - Oil drops 31 cents to $34.62 a barrel
The reason: Investors expect tomorrow's weekly EIA report to show an increase once again in U.S. crude inventories. Analysts estimate an increase of 1.8 million barrels for the week ended Feb. 13.

February 19th (Thursday) - Oil surges $4.86 to $39.48 a barrel
The reason: Today's weekly EIA report revealed a surprising drop in U.S. crude inventories. Inventories fell for the first time this year, declining 138,000 barrels. Analysts expected an increase of 1.8 million barrels.

February 20th (Friday) - Oil falls 54 cents to $38.94 a barrel
The reason: Today's pessimism in the stock market spilled over into oil.

February 23rd (Monday) - Oil slides $1.59 to $38.44
The reason: Oil followed the tumbling U.S. stock market today despite a warning that OPEC will likely cut output when members meet next month on March 15th.

February 24th (Tuesday) - Oil jumps $1.52 to $39.96 a barrel
The reason: Oil followed US stocks higher after Ben Bernanke told Congress that the nationalization of banks is unlikely and that the "severe" recession could end this year. Tomorrow will be dictated by the EIA's Weekly Petroleum Status Report as analysts expect crude inventories to rise 2 million barrels for the week ended Feb. 20.

February 25th (Wednesday) - Oil rises $2.54 to $42.50 a barrel
The reason:Today's EIA report revealed that gasoline inventories unexpectedly dropped 3.4 million barrels and that crude inventories only rose 700,000 barrels. Analysts had expected gasoline inventories to fall 100,000 barrels and crude inventories to rise 2 million barrels.

February 26th (Thursday) - Oil surges $2.72 to $45.22 a barrel
The reason: The main oil supplier of the United Arab Emirates unexpectedly announced today that it will cut 15%-17% of its April crude supplies to Asia. Support also came from yesterday's EIA report which showed U.S. gasoline demand rising.

February 27th (Friday) - Oil slips 46 cents to $44.76 a barrel
The reason: U.S. GDP for the last quarter of 2008 was downwardly-revised from -3.8% to -6.2%.

March 2nd (Monday) - Oil plunges $4.61 to $40.15 a barrel
The reason: Oil prices declined sharply today on demand worries as the Dow dropped below the 7000 mark for the first time since 1997. In addition, the US Commerce Department reported that construction spending in January fell to a four-year low.