I have created another forum using minibb which is being used for DVD Reviews. I wanted a method of displaying YouTube videos - which is already built in - that was more reliable that posting a single video (users can take it down etc). I finally used the script from
here which displays lots of videos.
The way I have added the script to the site is to first create an Admin or Mod only bbcode button that inserts the correct size iframe, then I simply add the script url with the search term and viola it appears on the page. I also altered the video search script so that it works off a search query, along with a video close / off link.
The result can be seen at the bottom of
this page - where it says 'The Selfish Giant Trailer YouTube Video Search'.
Not hard to implement really.