Here's some background: http://ilovebees.blogspot.com/
And here is the site: http://www.ilovebees.com
Here's discussion about it in the Bungie forums: http://www.bungie.net/Forums/posts.aspx?postID=364518&viewreplies=true&postRepeater1-p=1
Here's where you can see the trailer (the link is at second 43..read above and you'll know what I am talking about). Kind blurry but you can see the link change: http://entertainment.msn.com/movies/article.aspx?news=164795
Not sure if Bungie did this or XBox. But excellent marketing if you ask me! Way to go whomever you are!