The New York Times isn't beyond a little "experimentation" -- not when it comes to iPad apps, at least. The old gray lady today is showing off its "experimental" iPad web app, an HTML5-powered reading experience available to digital subscribers with its Web + Tablet and All Digital Access packages. The app's got four ways to consume all the news that's fit to digitize, including the Trending format, which offers up the past hour's top 25 trending stories on Twitter and the more traditional Today's Paper, which recalls those days when people used to get their news fro