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NEW YORK (

TheStreet

) -- "Today, everyone was focused on earnings and I think that's terrific," Jim Cramer told the viewers of his "Mad Money" TV show Tuesday.

But he reminded viewers that there are multiple ways to make money in the markets, one of which is sticking with the colossal themes that are working, such as his "mobile Internet tsunami."

Cramer said his thesis was once again proven by today's announcement that networking giant

Cisco

(CSCO) - Get Report

, which he also owns for his

Action Alerts PLUS portfolio, is buying

Starent Networks

(STAR) - Get Report

, whose technology is at the heart of the mobile Internet for a 20% premium. How strong are the mobile Internet stocks? He said both stocks rose on the news.

Jim Cramer's newest book,

Getting Back to Even

, is out in bookstores today. We've got an excerpt from the book explaining why

investors shouldn't give up.

And if you are in the New York area, you can meet Jim and get your copy signed at the following locations:


Cramer Book Signings Near New York

Tuesday, Oct. 13, 7:30 p.m.: Barnes & Noble, Paramus, NJ (765 Route 17 South)
Wednesday, Oct. 14, 7 p.m.: Borders, Bridgewater, NJ (290 Commons Way)
Tuesday, Oct. 20, 7 p.m.: Mendham Books, Mendham, NJ (84 East Main St.)
Tuesday, Nov. 17, 7 p.m.: Barnes & Noble, Manhattan (33 East 17th St.)

Cramer first recommended Starent Networks on May 8, a call that's now up 80%. In fact, his "Mobile Internet Index" of 21 tech stocks is up 11.5% since its introduction just a few weeks ago on Aug 11.

According to Cramer, "Cisco gets it," and sees the huge potential of the mobile Internet and revolution in smart-phone technology. With mobile Internet traffic expected to double every year for the foreseeable future, Cramer said the question is not when

Apple

's

(AAPL) - Get Report

iPhone will go from 3% to 6% of the cellphone market, but rather when it will command 30% of that market.

Cramer said on the heels of the Starent deal, he likes both

Tekelec

( TKLC) and

Ciena

(CIEN) - Get Report

as the next possible takeover targets. Both stocks also reside in his mobile index and Cramer said simply "don't wait" for the analysts and Wall Street to catch up, get in on the ground floor now.

Tech Defense Play

Cramer said another secular growth trend that's not going away is protecting the homeland, which is why he said he's featuring the very best of the homeland security stocks all week.

Tonight, he recommended

NICE Systems

(NICE) - Get Report

, whose technology is protecting infrastructure around the globe.

Cramer said voice, data and video surveillance and analysis is the first line of defense against terrorist attacks, and that's why he first recommended NICE Systems back on March 15, 2006. Since then, it's up a modest 20% despite the chaos in the markets, he said.

He said NICE Systems has the best technology when it comes to detecting intruders and suspicious activity at locations as diverse as the Eiffel Tower and the New Jersey Transit System. Cramer said the company has a solid edge over its competitors and a strong pipeline that will afford the company great revenues and earnings for many years.

Cramer said he also likes the company's balance sheet, with $7.77 a share in cash. The company trades at just 17.7 times its earnings, despite a 17% growth rate. That makes NICE Systems a great stock, at a great price, he said.

He said investors should buy the stock the next time the market pulls back.

Battle of Retailers

In the "Off The Charts" segment, Cramer went head to head with colleague Dan Fitzpatrick over the charts of two specialty retailers,

Deckers Outdoor

(DECK) - Get Report

and

Under Armour

(UA) - Get Report

.

According to Fitzpatrick, both stocks are a buy. He said that Decker's chart shows a three-month consolidation period, with the stock now breaking out above its 200-day moving average. The chart of Under Armour is almost identical according to Fitzpatrick, with a similar consolidation period followed by recent strength.

But Cramer said while the charts may be similar, Deckers is clearly the winner, beating Under Armour hands down when it comes to the fundamentals. He said Deckers gets most of its sales from its Uggs brand of footwear sold at high-end retailers, while Under Armour products are sold practically everywhere. He also said Deckers has more international exposure, with 60% of its sales coming from overseas, while Under Armour only derives 5% of its sales from overseas.

Cramer said all in all, Under Armour just paints a mixed picture. The company's recent expansion into footwear has been shaky, with many of its products being discounted at retailers. Likewise, the company's apparel products are seeing slowing growth and increased competition.

Cramer said when it comes to price, Deckers is also the clear winner, with shares trading at just 10 times earnings compared to the 26 times multiple at Under Armour.

Off the Wall of Shame

Cramer took a little time out to update his "Wall Of Shame" list of the worst CEOs.

First, he removed Jeffrey Peek, CEO of the beleaguered

CIT Capital

TICKER TYPE="EQUITY" SYMBOL="CIT" PRIMARY="NO"/>, after Peek today announced he's leaving the company at year's end. Cramer said "better late than never" for the CEO who took the company from $37 a share in 2004, to just 90 cents a share today.

Cramer also pardoned Strauss Zelnick, head of

Take-Two Interactive

(TTWO) - Get Report

, saying that Zelnick has suffered enough for his failed deal with reflow game maker

Electronic Arts

( ERTS).

Filling the open spot, Cramer once again added Wes Edens, chairman of

Fortress Investments

(FIG)

, this time for the company's disastrous IPO of

RailAmerica

(RA) - Get Report

today.

Cramer said this IPO, which debuted at $15 a share, immediately tanked to $13.70 a share because Fortress structured the deal so they could cash out as public investors bought in. Cramer said this poor excuse for an IPO could ruin an already fragile IPO market.

Lightning Round

Cramer was bullish on

People's Bank

(PBCT) - Get Report

,

United Parcel Service

(UPS) - Get Report

,

Celgene

(CELG) - Get Report

and

St. Joe

(JOE) - Get Report

.

He was bearish on

Select Medical Holdings

(SEM) - Get Report

and

Brookdale Senior Living

(BKD) - Get Report

.

To watch replays of Cramer's video segments, visit the Mad Moneypage on CNBC

.

Want more Cramer? Check out Jim's rules and commandments forinvesting from his latest book by

clicking here.

For more of Cramer's insights during the Lightning Round, clickhere

.

At the time of publication, Cramer was long Cisco.

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."

None of the information contained in "Mad Money" constitutes a recommendation by Mr. Cramer, TheStreet.com or CNBC that any particular security, portfolio of securities, transaction, or investment strategy is suitable for any specific person. You must make your own independent decisions regarding any security, portfolio of securities, transaction, or investment strategy mentioned on the program. Mr. Cramer's past results are not necessarily indicative of future performance. Neither Mr. Cramer, nor TheStreet.com, nor CNBC guarantees any specific outcome or profit, and you should be aware of the real risk of loss in following any strategy or investments discussed on the program. The strategy or investments discussed may fluctuate in price or value and you may get back less than you invested. Before acting on any information contained in the program, you should consider whether it is suitable for your particular circumstances and strongly consider seeking advice from your own financial or investment adviser.

Some of the stocks mentioned by Mr. Cramer on "Mad Money" are held in Mr. Cramer's Action Alerts PLUS Portfolio. When that is the case, appropriate disclosure is made on the program and in the "Mad Money" recap available on TheStreet.com. The Action Alerts PLUS Portfolio contains all of Mr. Cramer's personal investments in publicly-traded equity securities only, and does not include any mutual fund holdings or other institutionally managed assets, private equity investments, or his holdings in TheStreet.com, Inc. Since March 2005, the Action Alerts PLUS Portfolio has been held by a Trust, the realized profits from which have been pledged to charity. Mr. Cramer retains full investment discretion with respect to all securities contained in the Trust. Mr. Cramer is subject to certain trading restrictions, and must hold all securities in the Action Alerts PLUS Portfolio for at least one month, and is not permitted to buy or sell any security he has spoken about on television or on his radio program for five days following the broadcast.