Walgreen ( WAG) is a best-of-breed drugstore that's better than CVS ( CVS)and Rite Aid ( RAD), Jim Cramer told a caller to his "RealMoney" radio show Friday It has the best management in the industry, and although until recently the stock has not done anything, it's starting to move up as the market goes down, he said. "Walgreen falls into the thesis of what you buy when everything's going down," said Cramer. He told another caller to stick with UnitedHealth ( UNH), which he owns for his charitable trust, Action Alerts PLUS . Cramer believes UnitedHealth is going to make its quarter and has one of the best stock charts. Cigna ( CI) and Aetna ( AET) have both been moving up, but UnitedHealth has lagged behind because of its options backdating issue, but Cramer believes the problem is going away. In a slowing economy, Cramer said AT&T ( T) could be a good stock, and he advised a caller to stick with it. When a caller inquired about Kohl's ( KSS), Cramer recommended waiting until the stock comes down and then swooping some up, since it is currently a point off its 52-week high. Cramer said the problem with Disney ( DIS) is that people don't want to make the trek to the company's amusement parks because of high oil prices. However, he believes this problem is short term, because eventually people will get used to high oil prices. He said he would pick up some Disney. Cramer told a caller to buy some Amgen ( AMGN) now. The stock, which is three points off its low and 20 points off its high, is the best bargain in biotech, he said. When a caller asked about Starbucks ( SBUX), Cramer said to pull the trigger on the stock now, as he believes it may become more of a Japan and China story than a U.S. story.