I've tried it just about every way, using the "share" on YT, then "embed", and even the web address, but with no luck.
I would like an answer to that question also.
Well, when I added one in Serious Discussion, I just pasted the default code YouTube gave under share -> embed.
However, when I try that in the Personal forum, it gives a website error. I think (some) HTML may be disabled in the personal forum.
http://www.queenzone.com/forums/1324910/we-re-moving-into-early-years-dvd-s-box-set-now-forget-adam-lambert.aspx?page=2
Here I just used the default code from YouTube.