Embedding YouTube movies into Forum

I thought this was interesting mode to try out --
I added a "bbcode" code pasting youtube videos into the forum.

Here is what you type into the post --

[ youtube ]ZSM8A9KDw8Y[ /youtube ]

(remove spaces within brackets)

e.g. --
ZSM8A9KDw8Y

you did this how? i'd like to add this feature to my forum Welcome to NYSpeed.com! (http://www.nyspeed.com)

Take a look at this "tip" on vBulletin.com

How To Make a YouTube BB Code (http://www.vbulletin.com/forum/showthread.php?t=199304)

"How To Make a YouTube BB Code
You can use the embed code on YouTube's site to make a BB code so users can display YouTube movies inside of their posts:"