Some New Yorkers in the Upper East Side awoke with a start at 3:30 a.m. Monday when a small bomb exploded in front of a Starbucks, shattering the cafe's windows. Thus far, the culprit remains a mystery, though the ubiquitous coffee chain makes an easy target for anarchist-types. Dozens of residents were evacuated from the building housing the Starbucks. There have been several recent cases involving small bombs set off in the wee hours of the morning in NYC. A mysterious biker has been connected with improvised explosive devices thrown at the Mexican and British consulates, as well as a military recruiting station in Times Square.