Cramer said Intuitive Surgical beat its numbers fair and square, and when a company beats every metric Wall Street is looking for, that's a company he wants to invest in.

Going Strong

Jim welcomed Michael McCallister, CEO of longtime Cramer favorite Humana ( HUM) to the show for details on the company's most recent earnings.

McCallister said Humana, one of the largest players in the Medicare market, is taking full advantage of the changing demographics in the US. He noted the company reported a 69% jump in earnings in the past quarter and raised its guidance for 2008.

He said the company plans to grow through focused acquisitions and is not opposed to buying back shares if it's in the best interest of its shareholders.

Asked about the upcoming election, McCallister said just about any Medicare reform plan will benefit providers such as Humana.

Cramer told investors to buy Humana on any weakness.

The Lightning Round

Cramer was bullish on American Eagle Outfitters ( AEO), ValueClick ( VCLK), Wachovia ( WB), Sierra Wireless ( SWIR), Skyworks Solutions ( SWKS), Terex ( TEX), Walt Disney ( DIS), Wellpoint ( WLP) and Humana ( HUM).

Cramer was bearish on Aqua America ( WTR), Time Warner ( TWX), Isle of Capri Casinos ( ISLE) and Cerner ( CERN).

Want more Cramer? Check out Jim's rules and commandments for investing by clicking here.

For more of Cramer's insights during the Lightning Round, click here .

Jim Cramer, host of the CNBC television program "Mad Money," is a Markets Commentator for TheStreet.com, Inc., and CNBC, and a director and co-founder of TheStreet.com. All opinions expressed by Mr. Cramer on "Mad Money" are his own and do not reflect the opinions of TheStreet.com or its affiliates, or CNBC, NBC UNIVERSAL or their parent company or affiliates. Mr. Cramer's opinions are based upon information he considers to be reliable, but neither TheStreet.com, nor CNBC, nor either of their affiliates and/or subsidiaries warrant its completeness or accuracy, and it should not be relied upon as such. Mr. Cramer's statements are based on his opinions at the time statements are made, and are subject to change without notice. No part of Mr. Cramer's compensation from CNBC or TheStreet.com is related to the specific opinions expressed by him on "Mad Money."

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