NEW YORK (TheStreet) -- Of the best-performing stocks in the S&P 500 since Lehman's collapse, Nvidia (NVDA) - Get Report and Micron (MU) - Get Report both made the top five.

On Tuesday's "Stop Trading!" segment on

CNBC

, Cramer called No. 1 performer Nvidia the "ultimate discretionary chip company" and Micron the "ultimate gadget play." These stocks, he said, are "what you buy when you think there's a strong worldwide economy."

Cramer said he would buy Nvidia but prefers

Advanced Micro Devices

(AMD) - Get Report

to Micron.

Cramer said he'd also buy No. 2 performer

Whole Foods

(WFMI)

, which "has been stalled here after that great quarter." Rounding out the five best-performing S&P 500 stocks since Lehman's collapse were

Ford

(F) - Get Report

and

Schering-Plough

(SGP)

.

As for gold stocks, Cramer said he likes

TST Recommends

Randgold

(GOLD) - Get Report

and

Agnico-Eagle Mines

(AEM) - Get Report

. He said he didn't think gold was done and added that he thinks "gold is a sign of economic progress and robust growth around the world."

Regarding

Kraft's

(KFT)

rejected bid for

Cadbury

(CBY)

, Cramer said that all his life he's seen "food companies not have growth and have to do acquisitions" and said "this is right along the lines of them."

However, he recommended the stock, regardless of whether it does acquire Cadbury. "If they don't get it, you have a dandy yield," he said. "If they do get it, you have growth in the out years."

Though he's not confident in Kraft's management, he said the Cadbury bid "was a sign of life."

In terms of acquisitions, he thought Cadbury should buy

Hershey

(HSY) - Get Report

.

-- Written by Rebecca Corvino in New York.