Beyond the torment it has already caused in the Carribbean and the stress it places on those who are evacuating the Gulf Coast, hurricane Gustav will lead to higher prices at the pumps. That's because the majority of the Gulf of Mexico's oil production is shut down in anticipation of Gustav's force.

Exactly how much production is being shut down? CNNMoney reports that "energy producers have shut in approximately 77% of oil output and 37% of natural gas production in the Gulf of Mexico." This is affecting three producers particularly hard -- Royal Dutch Shell PLC (NYSE: RDS.A), BP PLC (NYSE: BP) and Chevron Corp. (NYSE: CVX).

And the production shut-down is significant -- "nearly 1 million barrels of daily oil production is now shut down. The last time this happened was in November 2005, after Hurricanes Katrina and Rita. In addition, 2.75 billion cubic feet of daily natural gas production is now shut down" according to CNNMoney.

TheStreet.com's Jim Cramer says names in this group are now trading vehicles, not long-term investments, but that doesn't mean they're any less critical to own.

Here we are again in the weeklong pullback in oil where the stocks all get thrown out and no one wants to touch them. We will soon hear from the chartists (as I call technical analysts) that these stocks were unable to take out their highs, or they are getting the right -- and cold --shoulder.

How long until I hear that now that the bubble has popped and you are looking at Exxon (NYSE: XOM) (Cramer's Take) as Toll (NYSE: TOL) (Cramer's Take) at $50 and Chevron (NYSE: CVX) (Cramer's Take) as Lennar (NYSE: LEN) (Cramer's Take)?

Plus you have the ne'er-do-wells, like the ridiculously poorly run BP (NYSE: BP) (Cramer's Take), truly stinking up the joint.

So, what should you do?

How about buy them?

MOST NOTEWORTHY: Amazon.com (AMZN), YRC Worldwide (YRCW), SanDisk (SNDK), Activision (ATVI), Royal Dutch Shell (RDS.A) and KB Home (KBH) were today's noteworthy downgrades:

• BWS Financial cut Amazon.com (NASDAQ: AMZN) shares to Sell from Hold on valuation.

• YRC Worldwide (NASDAQ: YRCW) was assumed with an Underweight rating, down from Neutral, as JP Morgan is cautious on the industry's L-T-L pricing.

• UBS downgraded SanDisk (NASDAQ: SNDK) to Neutral from Buy on valuation.

• Gabelli downgraded shares of Activision (NASDAQ: ATVI) to Hold from Buy to reflect their expectation of increasing competition for some of the company's key titles.

• Royal Dutch Shell (NYSE: RDS.A) was downgraded to Underweight from Neutral at HSBC on valuation.

• Matrix believes the prolonged weakness in the housing market is eliminating economic profits and cut KB Home (NYSE: KBH) to Strong Sell from Sell...

OTHER DOWNGRADES:

• Citigroup and ABN Amro cut Rio Tinto Group (NYSE: RTP) to Hold from Buy.

• Merrill Lynch downgraded J.M. Smucker (NYSE: SJM) to Sell from Neutral.

• First Albany downgraded shares of Travelzoo (NASDAQ: TZOO) to Neutral from Buy.

• Matrix downgraded Constellation Brands (NYSE: STZ) to Hold from Buy.

• AG Edwards downgraded Aetna (NYSE: AET) to Hold from Buy.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

MOST NOTEWORTHY: Royal Dutch Shell (RDS.A, RSD.B) and Overseas Shipholding Group (OSG) were today's noteworthy upgrades:

• Deutsche Bank upgraded shares of Royal Dutch Shell (NYSE: RDS.A, RDS.B) to Buy from Hold to reflect improved earnings momentum from higher oil prices and strong refining margins.

• JP Morgan raised Overseas Shipholding (NYSE: OSG) to Overweight from Neutral following meetings with management to reflect uncovered value in vessels the company leases from other shipping lines...

OTHER UPGRADES:

• Wachovia upgraded shares of Raymond James Financial (NYSE: RJF) to Outperform from Market Perform.

• Union Drilling Inc (NASDAQ: UDRL) was raised to Peer Perform from Underperform at Bear Stearns.

• Deutsche Bank upgraded BP plc (NYSE: BP) to Buy from Hold.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

MOST NOTEWORTHY: MGM Mirage (MGM), KLA-Tencor Corp (KLAC), Raytheon Co (RTN) and four apartment REIT's were today's noteworthy upgrades:

• Bear Stearns upgraded MGM Mirage (NYSE: MGM) to Outperform from Peer Perform following Kirk Kerkorian's intentions to purchase the Bellagio and City Center and also pursue strategic alternatives for the rest of the company.

• Matrix raised KLA-Tencor (NASDAQ: KLAC) to Buy from Hold, believing that growing demand for memory chips used in computers is leading to increasing revenues and profits.

• Cowen upgrade shares of Raytheon (NYSE: RTN) to Outperform from Neutral based on cash deployment potential from the RAC sale, pension EPS tailwind, foreign sales cycle, and strong execution.

• Wachovia upgraded shares of Archstone-Smith Trust (NYSE: ASN) and Apartment Investment and Management Co (NYSE: AIV) to Outperform from Market Perform and Equity Residential (NYSE: EQR) and UDR, Inc (NYSE: UDR) to Market Perform from Underperform...

OTHER UPGRADES:

• AG Edwards upgraded Marathon Oil Corp (NYSE: MRO) and Royal Dutch Shell (NYSE: RSA.A) to Buy from Hold.

• Stifel raised Citrix Systems, Inc (NASDAQ: CTXS) to Buy from Hold.

• RBC Capital raised Kilroy Realty Corp (NYSE: KRC), Boston Properties, Inc (NYSE: BXP) and Maquire Properties, Inc (NYSE: MPG) to Sector Perform from Underperform.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).