The host of CNBC's Mad Money, Jim Cramer, has called for an Apple stock price target of $300. In a recent episode of the program Cramer comments on Apple's fourth-quarter results, citing them as a reason for buying Apple stock despite it already being very expensive, hovering close to $200. Apple allegedly revealed in its results call that it is having a hard time keeping up with demand, not only in terms of the iPhone 3GS but many of its products, including Macs. Such a problem is a good one to have, Cramer suggests.