This video, "Metafilter vs. Ask a Ninja Video" has a very obvious MeFi callout.
Speaking of asavage, did anyone else see the MeFi shoutout on tonight's Mythbusters? On the wall during one the post-myth summaries, "MeFi" was written in what looked like chalk on a green chalkboard. asavage mentioned that he'd shout the site out out in MeFi Podcast 3, but it sounded like that would only be for the old west show.
This is pretty cool.