On Wednesday's "Mad Money" show, Jim Cramer said he saw strength in telephone companies, including AT&T (T - Get Report) and Verizon (VZ - Get Report), which he said were trending higher.

On Thursday, AT&T closed down 24 cents, or 0.9%, at $25.50, while Verizon added 9 cents to close at $31.

Industrials were also showing signs of strength, he said, offering General Electric ( GE - Get Report) as an example, as were banks, such as Wells Fargo ( WFC - Get Report). Cramer owns both stocks for his Action Alerts PLUS charitable trust.

General Electric closed up 8 cents at $11.88, and Wells Fargo traded higher by $1.91, or 10.5%, to $20.09.

Wednesday was Earth Day, so Cramer looked into Owens Corning ( OC - Get Report) and Owens-Illinois ( OI) to demonstrate that green stocks aren't necessarily a good investment for your portfolio or the environment.

Cramer said that for stocks to head higher, they need to demonstrate growth and to pay a dividend, and Owens Corning and Owens-Illinois do neither.

On Thursday, Owens Corning gave up 78 cents, or 4.9%, to close at $15.23, while Owens-Illinois added 66 cents, or 3.8%, to close at $17.89.

Cramer was bullish on FirstMerit ( FMER), which he said might be one of few banks with the potential to profit while other banks fail. Cramer said FirstMerit has a chance of becoming Ohio's largest bank. It's returning its TARP funds and pays a nice dividend of about 6%.

On Thursday, FirstMerit closed up 81 cents, or 4.3%, at $19.71.

Cramer was also bullish on Hewlett-Packard ( HPQ - Get Report), which he owns for Action Alerts PLUS, and expressed surprise that the stock has fallen as much as it has.

Hewlett-Packard closed at $34.76 on Thursday, up 8 cents.

Cramer also said he prefers Aeropostale ( ARO) to competitors Abercrombie ( ANF) and American Eagle ( AEO) and said Aeropostale is a buy.

Aeropostale fell 21 cents, or 0.7%, to $32.31 on Thursday, while American Eagle was down 25 cents, or 1.6%, at $15.01, and Abercrombie gave up 19 cents, or 0.8%, to close at $23.85.

At the time of publication, Cramer was long Hewlett-Packard, Wells Fargo and General Electric.

Jim Cramer is a director and co-founder of TheStreet.com. He contributes daily market commentary for TheStreet.com's sites and serves as an adviser to the company's CEO. Outside contributing columnists for TheStreet.com and RealMoney.com, including Cramer, may, from time to time, write about stocks in which they have a position. In such cases, appropriate disclosure is made. To see his personal portfolio and find out what trades Cramer will make before he makes them, sign up for Action Alerts PLUS. Watch Cramer on "Mad Money" weeknights on CNBC. Click here to order Cramer's latest book, "Mad Money: Watch TV, Get Rich," click here to order his book, "Real Money: Sane Investing in an Insane World," click here to get his second book, "You Got Screwed!" and click here to order Cramer's autobiography, "Confessions of a Street Addict." While he cannot provide personalized investment advice or recommendations, he invites you to send comments on his column by clicking here.

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