I can use the browser on my LG tv to watch web stuff there's no app for. However, it's fiffy whether or not a particular video will play as I don't think it has much memory available to it. I no longer use it for that anyway, I have a connected Roku, a Tivo, a WDTV, a Chromecast, and a Sony Blu-Ray with more apps than I have time in the world to watch.
A Chromecast is your best bet for web things that don't have apps. Cheap, and work well.
A Chromecast is your best bet for web things that don't have apps. Cheap, and work well.