So what does everyone think the killer app will be for tablet computers? That one app or functionality that will make the tablet computer a must have. For computers it was the spreadsheet. For the internet it was email For the iphone it was the app store Now comes along the tablet computer which has faster speeds similar to a laptop but also has the mobility of a cell phone. Computer + cell phone = some pretty impressive stuff you can accomplish with it. What will that killer app be? Share your ideas!