Recognize automatically YouTube URL
I think that when you recognize that your user copy-paste a YouTube url like
<iframe width="420" height="315" src="//www.youtube.com/embed/XXY-aBAlgC8" frameborder="0" allowfullscreen=""></iframe>
That is what gmail does.
I think that if you do that, it will be easy for people like me to show to john doe users that we can do much better than that PowerPoint thing :-)
We made this possible through the media insertion dialog instead (http://cl.ly/image/2U0E1D3Z2A2I).
AdminOwen (Owner, Slides) commented
You can actually already do this here: http://cl.ly/image/2U0E1D3Z2A2I
It's a bit hidden away though so we'll make to add a help page for it.