Just wish I could figure out how to embed the YouTube here. I'm using the old BB code approach (the word "youtube" in brackets surrounding the URL), and the YouTube box shows up fine but won't link to the actual YouTube video.
I had the youtube and brackets part right, but the form of the URL you provided is very specific, and is slightly different both from what shows up in the address bar in my browser as well as from what YouTube provides (under "Share") as the weblink.