Has anyone else noticed the rather significant change to when you embed a YouTube video on your website or blog? Before, it was a rather static application that showed you the video and that was about it. Now, they’ve implemented an Apple and/or Vista-like interface, so to speak, when you roll your mouse over the playing video.

Related videos are shown as thumbnails near the bottom of the screen, and they enlarge a bit when you run your mouse cursor over them (kind of like the taskbar at the bottom of Mac OS X). You also see the titles and ratings of each of these videos. Check out the example below of the newly announced iPhone-competing HTC Touch. This new interface only pops up when you start playing the video.

UPDATE: And now it’s gone. I guess the development team at YouTube was doing a little experimenting last night.