Does Mark 16:16 belong in the Bible?

Some modern Bibles cast doubts as to whether the end of Mark 16:9-20 belongs in the Bible. Some omit this section altogether. Others having a shorter ending after verse 8. Other Bibles include the verses with a disclaimer that the verse were "not in the original." What's the deal? Does Mark 16:16 belong in the Bible? This is a short, not exhaustive but none the less straight to the point espisode of the matter. Take a listen!