When Clicker launched last fall it seemed like just another me-too streaming video aggregator, but we'll have to give it another look after it's followed up its Boxee integration by showing off the HTML5-built Clicker.tv site at Google I/O today. Designed as a "ten-foot" experience for TV screens it can be perused via mouse and keyboard or just a remote, bringing Clicker's index of video including network TV, webisodes and web-only content, plus premium sources like Amazon VOD and iTunes. It's currently in beta, but if leaning back or browsing f