HTML 5 and Video

I am thrilled that HTML 5 is being used to display youtube videos in the browser. I have noticed on my home computer that flash and shockwave have really been the cause of most of my browser's crashes. I usually know that if my browser is having problems (locking, stalling or slowness) it is because of a flash or shockwave component. I look forward to removing the single largest piece of flakiness in my browsing experience.