EDIT: When Conitec upgrades UBB to 7.5, YouTube videos won't work. It says "Embedding disabled by request". So here is the link: www.youtube.com/watch?v=2fjuBSzVvwo
Actually, it's because the person who uploaded the video doesn't want it to be embedded, YouTube gives you the ability not to.
To be honest, I like the original version better by the way.