Lightning Round: United Rentals, Duke Energy, Berkshire Hathaway and More

Royal Dutch Shell : Cramer is bullish on this oil and gas company's stock.

United Rentals : Industry has slowed in the U.S., so Cramer said he is cautiously optimistic about this stock.

Heckmann : This is a very speculative stock, Cramer said, since it is tethered to the price of oil, which has been falling lately. He still likes it as a long-term buy, though.

Equity Residential : Cramer hit the "Buy, buy, buy!" button on this one.

Duke Energy : The "Mad Money" host continues to like this stock.

Berkshire Hathaway : Cramer likes this stock for the long-term.

Call Cramer: 1-800-743-CNBC

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