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NEW YORK (TheStreet) -- Did you miss last night's "Mad Money" on CNBC? If so, here are Jim Cramer's top takeaways for today's trading.

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ConforMIS(CFMS) - Get Report : In an exclusive interview, Cramer spoke with Dr. Philipp Lang, president and CEO of ConforMIS, the medical device maker that celebrated its initial public offering Wednesday, with shares rallying over 28%. ConforMIS manufactures knee replacement implants using the latest in 3-D scanning and printing technologies to produce custom devices that fit patients perfectly.

Lang explained that ConforMIS is truly disruptive technology that starts with computer-assisted designs that stem from 3-D CT scans, then custom 3-D printing of all the components a surgeon will need to install the device followed by just-in-time delivery.

While traditional knee implants come only in a handful of sizes, ConforMIS delivers an implant that is exactly the size and shape of your existing bone structure. That results in shorter hospital stays and quicker recovery times as well as fewer problems later on.

Lang said ConforMIS' biggest challenge today is simply getting the word out to both patients and surgeons that this technology is now available. ConforMIS is also in development for hip replacements using the same technology.

Cramer said this is exactly the kind of disruptive technology and innovation that makes America great.

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Paychex(PAYX) - Get Report : In his second interview, Cramer also checked in with Marty Mucci, president and CEO of Paychex, the payroll processor with a 3.2% yield that also offers investors a look into the state of hiring in our economy.

Mucci said that Paychex is having a good year so far in 2015, with revenue up 9% and non-payroll services hitting $1 billion for the first time. He said that growth stems from both existing customers using more of Paychex services, but also from Paychex taking share and adding customers.

When asked about the latest trends in hiring, Mucci said they're definitely seeing more part-time employment, both from Obamacare as well as an uptick in the so-called shared economy. Paychex is also seeing some of the hardest-hit areas of the country, like Detroit, start to rebound and get stronger.

Cramer said Paychex remains a great story, and if the Federal Reserve raises interest rates later this year that story will get even better.

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Lennar(LEN) - Get Report and Toll Brothers(TOL) - Get Report : Not all of the markets are trading in lock-step with Greece and Europe, Cramer reminded viewers. New household formation right here in the U.S. will be among the major themes in the second half of 2015, and that means home builders including Lennar and Toll Brothers will once again take center stage. So will all of the home-related stocks, from the home improvement stores to toolmakers and the suppliers of everything that goes into a home.

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At the time of publication, Cramer's Action Alerts PLUS had no position in stocks mentioned.