Web standards guys hate Flash. They want it to die. They’ve always wanted it to die. But Flash can do graphical things that have been either impossible to do with DHTML or could only be done poorly. Microsoft hates Flash too. That’s why they’ve built Silverlight. But for web standards guys, that’s just another non-standard approach.
We now see the beginning of the end for the plugins.
Where can you find browsers capable of this? Safari/Chrome and Firefox.
What you’ll see is Mac-specific and Linux-specific sites start to make use of these techniques. But they won’t become industry-wide until IE 9 or IE 10 (if then). Or until IE market share drops into the 30% range (stop laughing, it’s already around 70%).