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NEW YORK (TheStreet) -- Leadership is a wonderful thing, Jim Cramer said on Mad Money Tuesday. Cramer said investors may have already missed the bottom but there are still plenty of opportunities left to come.

There have been many sectors that have not been participating in the market's rally, Cramer continued, including the high-growth tech names, retail, the airlines and most of all, biotech. All of these sectors have been left for dead, he noted -- until today.

Netflix(NFLX) - Get Report spurred the high-growth tech names today as that high-multiple stock with no earnings proved that its model works internationally, sending shares up 7% on the day, and taking others like Yelp(YELP) - Get Report and Zillow(Z) - Get Report along for the ride.

A takeover bid for Allergan(AGN) - Get Report was enough to spark the biotech and health care sectors into action, Cramer noted. Many of these high-fliers now seem undervalued.

The retail sector also turned positive today on an upgrade of Home Depot(HD) - Get Report, which sent those shares up a quick 2%. The airlines also ended in the green, thanks to continued weakness in crude oil.

Cramer said the markets are still full of skeptics and critics who will panic at the drop of a hat. But when the markets take their next pause, that will certainly be the time to buy into these new market leaders.

Allergan vs. Valeant

"I'm a big fan of mergers and acquisitions," Cramer told viewers -- but not the recently announced planned hostile takeover of Allergan by Valeant Pharmaceuticals (VRX) for $45 billion.

Cramer said he's long been a fan of Allergan and CEO David Pyott. The company has a brilliant strategy and is becoming a powerhouse in everything from eye care and obesity to migraines and incontinence treatments.

When the analysts feared generic competition to Allergan's eye care treatments last year, Pyott told Mad Money viewers not to worry. Turns out the analysts were dead wrong, which is why Allergan shares more than doubled since then and were up 28% so far this year, before today's announcement.

So why not support the Valeant takeover? Cramer said Valeant needs to make acquisitions in order to keep growing, and if this deal goes through Allergan will likely end up like many of Valeant's other takeovers -- a shell of its former self.

Cramer explained that Valeant will very likely slash Allergan's high R&D budget and fire much of its sales staff, moves that will make the deal instantly accretive to Valeant's bottom line. Valeant will also instantly profit from its lower tax rates overseas.

But in its wake, the great franchise that was Allergan will be no more, Cramer concluded, and that would be a shame.

Executive Decision: Paul Raines

For his "Executive Decision" segment, Cramer spoke with Paul Raines, CEO of GameStop(GME) - Get Report, the video game retailer that's been under fire ever since the next generation of game consoles debuted last fall. Shares of GameStop current yield 3.2% and trade for less than 10 times earnings.

Raines admitted that GameStop did lower guidance twice since last appearing on Mad Money, but said that was only to rein in expectations because the company's product mix shifted from higher-margin software to lower-margin hardware. He said his company remains on track to maximize its profits in 2014 now that most gamers have their new consoles.

When asked whether GameStop's brick-and-mortar model is still relevant now that games can simply be downloaded over the Internet, Raines noted GameStop had $730 million in digital sales last year but largely "the consumer just isn't there yet." He said GameStop's strategy is to meet the consumer where they are, and today that's still largely buying, selling and trading physical media in stores.

Finally, when asked about Wal-Mart's(WMT) - Get Report entry into the buying and selling of video games, Raines said competition raises awareness for the category and he welcomes the chance to compete.

Cramer told viewers to do their homework and decide for themselves whether GameStop can turn their fortunes around.

Executive Decision: David Lesar

In his second "Executive Decision" segment, Cramer also spoke with David Lesar, president, chairman and CEO of Halliburton(HAL) - Get Report, which today delivered a one-cent-a-share earnings beat on a 5.4% rise in revenue. Shares of Halliburton are up 12% since Cramer featured the stock just six weeks ago and 62% over the past 12 months.

Lesar was very upbeat, saying he sees a great market coming in the U.S., one that will create many jobs and vastly increase our nation's energy security. That will, in turn, mean more profits for Halliburton and more money flowing back to shareholders.

Speaking of shareholders, Halliburton just increased its dividend by 67% and increased the already generous stock buyback program, which has retired 11% of the company's outstanding shares.

When asked about international markets, Lesar was positive on Mexico and also noted the 50% pickup in business in Saudi Arabia. However, he remains most excited about the Permian Basin right here at home, an 80-year-old oil field that was essentially dead before new technology turned it into the fastest-growing oil field in the world.

Cramer remains bullish on Halliburton.

Lightning Round

P/>In the Lightning Round, Cramer was bullish on SolarCity (SCTY) , First Solar(FSLR) - Get Report, PBF Energy(PBF) - Get Report, Valero Energy(VLO) - Get Report, HollyFrontier(HFC) - Get Report and Manitowoc(MTW) - Get Report.

Cramer was bearish on Stratasys(SSYS) - Get Report.

Executive Decision: Richard Kinder

For his third and final "Executive Decision" segment, Cramer spoke with Richard Kinder, chairman and CEO of Kinder Morgan Energy Partners (KMP) , the oil and gas pipeline operator with a $16 billion backlog and a stock that currently yields 7.1%.

Kinder said that while the short-term picture for oil and gas may appear erratic, over the long term things are very stable. He said the demand for natural gas is expected to increase from 70 billion cubic feet a day today to over 95 billion cubic feet a day over the next 10 years, and that's great news for Kinder Morgan.

When asked why his company's stock appears stalled, Kinder explained the consensus appears to be it is too big to grow, which is not true given its backlog and compelling story. Kinder noted the company just reaffirmed its guidance for 2014 and he personally owns 23% of the company and just bought more shares this quarter.

Cramer said Kinder Morgan remains the cheapest in the pipeline group and he believes the growth will be there for a long time to come.

To watch replays of Cramer's video segments, visit the Mad Money page on CNBC.

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-- Written by Scott Rutt in Washington, D.C.

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