Google’s Android cell phones are quickly closing the gap on Apple’s iPhone, according to new research from eMarketer. In the fourth quarter, the proportion of potential smartphone buyers who said they were going to purchase an Android jumped from 6% to 21%, surpassing blackberry for the first time, while interest in buying the iPhone dipped. For more details on what the Smartphone wars might look like as Google and Apple continue their ascendancy in the entertainment business, check out my analysis in this week’s New Media Minute.