These are my notes from a talk at DrupalCamp LA 2010 given by Scott Vandehey of Metal Toad Media (@spaceninja on twitter.) I arrived a few minutes late, so the introduction is not included. Thanks to Scott for the great talk!
New Video Tag
This includes a Controls attribute, which says that when the video is shown, give the user a way to control it. It doesn't specify which controls or how they should look, which is up to the browser manufacturer.