Hulu's streaming video is provided by flash. Web based applications which need video interaction, such as Rosetta Stone online, are flashed based. And flash b

Hulu's streaming video is provided by flash. Web based applications which need video interaction, such as Rosetta Stone online, are flashed based. And flash based games, as you mentioned, are a significant use of flash outside of ads. For the latter, note that creating a flash based games and apps is going to be significantly easier than doing any approximiation in javascript with canvas/o3d/video for quite a while.