As you can read everywhere, I also have to try the new features of WordPress 2.9
In this post I will just place a plain URL link to a YouTube Video, using no embed or object code around.
So here we go:
Easier video embeds in WP2.9 allow you to just paste a URL on its own line and have it automatically turn into the proper embed code. Sites having Oembed support are YouTube, Daily Motion, Blip.tv, Flickr, Hulu, Viddler, Qik, Revision3, Scribd, Google Video, Photobucket, PollDaddy, and WordPress.tv.
A theme using this feature with videos inserted as plain URL and resizing them on the fly in archive pages and the latest video post in the sidebar is Barthami Corporate, a great WordPress theme for videos