Here is a review of the performance of Jim Cramer’s stock picks from Thursday’s Mad Money show that shows the “Cramer effect” in action.

Devon Energy (DVN: 66.02 0.00%)
Devon Energy posted a 0.7% gain after Jim Cramer interviewed Devon Energy CEO Larry Nichols on last night’s show. Mr. Nichols reinforced Cramer’s view that natural gas is likely to be used as a bridge fuel and that officials in Washington are just now realizing its value. Cramer iss bullish on Devon based on the company’s diversified energy portfolio that includes both oil and natural gas.

Ross Stores (ROST: 51.97 0.00%)
In part 4 of the weeklong series, Jim Cramer profiled Ross Stores as a potential candidate to be the next “discount king”. The discount clothing retailer has recently posted positive same-store sales and has aggressive growth plans to nearly double the number of existing stores. However, Cramer is worried that Ross Stores will face the same challenges as TJ Maxx (TJX: 34.60 0.00%) as department stores reduce their inventory providing fewer opportunities for the discount retailers.

In concluding this week’s search for the next “discount king”, Mr. Cramer crowned BJ’s Wholesale (BJ: 0.00 N/A) as the best candidate to take the crown. The retailer stands to benefit from its membership base and diversified product offerings and yet the stock still remains cheap compared to its peers.

Cramer’s Lightning Round stock picks:

EMC (EMC: 26.15 0.00%) gained 0.6% – Cramer is bullish on the tech stock because of their potential partnership with Cisco Systems. “That is one red hot sizzling tech stock.”

Chesapeake Energy (CHK: 22.18 0.00%) rose 1.7% – Cramer still prefers Devon Energy over Chesapeake Energy.

Yahoo (YHOO: 15.83 0.00%) dropped 0.5% – Cramer expressed his disappointment with Yahoo and CEO Carol Bartz, “I like Carol Bartz, but she hasn’t delivered yet. I can’t think of a reason to buy it”.

Principal Financial Group (PFG: 26.87 0.00%) increased 0.6% – While Cramer feels that the financial stock is “out of the woods”, he still doesn’t recommend investors buy the stock.

Rockwood Holdings (ROC: 53.77 0.00%) jumped 3.0% – Cramer gave this stock a very bullish recommendation and believes this “hot” stock will go even higher.

Here is a review of the performance of Jim Cramer’s stock picks from Tuesday’s Mad Money show.

BJ’s Wholesale Club (BJ: 0.00 N/A)
In part 2 of the weeklong look at the next “discount king”, Jim Cramer focused on Costco (COST: 84.56 0.00%) and BJ’s Wholesale Club. Cramer likes their membership model which also encourages customers to continue regular shopping habits. However, Cramer prefers BJ’s because the company is currently increasing their same store sales, while Costco has been flat or even slightly declining. Cramer also likes the fact that BJ’s offers nearly twice as many products as Costco, but has only one third as many stores as Costco. This presents the company with tremendous growth opportunities which BJ’s management intends to capitalize on. Finally, BJ’s currently trades at a discount to Costco’s valuation, but Cramer believes that will soon change. BJ’s stock was up 1.4% on the recommendation, while Costco gained 1.2%

Vale (VALE: 26.51 0.00%)
Shares of the mining company dropped 0.7% despite a moderate recommendation from Jim Cramer yesterday. Morgan Stanley and HSBC recently put out conflicting reports with one upgrading and the other downgrading VALE’s stock. Cramer sided on the side of the upgrade due to rising iron ore and nickel ore prices and continued demand outside of China.

Cramer’s Lightning Round stock picks:

Medivation (MDVN: 71.645 0.00%) dropped 0.7% – Cramer recommends the stock only as a speculative play.

Babcock and Brown Air Limited (FLY: 13.52 0.00%) rose 4.2% – Cramer was bearish on this stock because he doesn’t like the aircraft leasing business and has been burned before.

Union Pacific (UNP: 114.68 0.00%) dropped 1.0% – “Union Pacific is a great company that I think, at any pullback you pull the trigger. There is a lot more room to run.”

Seaspan (SSW: 16.45 0.00%) fell 0.3% – Cramer feels that the stock is doomed.

Alcoa (AA: 10.67 0.00%) dropped 0.7% – “I think Alcoa is dead money.”

Boise (BZ: 8.31 0.00%) fell 2.8% – “I think we missed that stock already.”

Hexcel (HXL: 26.39 0.00%) declined 0.4% – “I don’t want to be in Hexcel.”

First Niagara Financial Group (FNFG: 9.82 0.00%) rose 0.4% – “I think First Niagara might be best in show. It’s got a dividend.”

Weyerhaeuser (WY: 20.38 0.00%) jumped 0.9% – Cramer is bullish on the stock and believes it is cheap.