In an effort to help force your ambivalent hand at the checkout, Google's taken a decidedly whimsical approach to Nexus S marketing. The end result: an interactive, YouTube-hosted mini-game that lets you bounce and blow four Google app-labeled balls through a funnel to the Nexus S. Sound fun? It kind of is, but before you wonder where the last half-hour went, keep in mind there's no free handset at the end of this Android rainbow -- just pure fun. It's a cute distraction that p