flash vs. html 5

Ok,

HTML 5 is the new thing. Everybody is talking about it (well, the geeks are!). And there are arguments saying that html 5 is more power full than flash and will someday take over it.

When I first heard this argument I looked into it a bit! and decided that I prefered html 5 because it is open, unlike flash. I also preferred it because of the new elements:

etc. And the CSS3 curved-corners.

Then, somebody said to me "Ok, html5. WOW!! What can it do? Because all have seen is promises. Promises that it will replace flash. Promises that it will make websites better. But, I haven't seen any answers. Utube still uses flash and the html 5 version crashes."

So, I thought about that. What has html 5 done? this? http://www.youtube.com/watch?v=6wRUFJ9TKWA.

I am now in the middle. I like the new tags, and css3 but I also think that atleast at the moment flash is better for games and video.