Here's a new vbCode to embed LiveLeak videos in your posts, rather than linking to the LiveLeak page.
Here's how it works:
To embed the video on this page:
http://www.liveleak.com/view?i=7679587648 copy the ID code
7679587648 (after http://www.liveleak.com/view?i=) and put it between the tags: [ll]7679587648[/ll]