Here's a popular thread meme from other forums. Post a video or audio link to some music that you're currently listening to. Posting a link to a YouTube or other video is easy with the new version. In the message editor, click the "film" icon for Media. In the popup that shows, paste the Share URL from YouTube or one of the other supported video sites, and click Embed. Actually, you don't even need to do that. You can just include the URL directly in the message and it will be converted to the right stuff. (As an example, the one I shared below looked like this: "http://youtu.be/aoFkC0hbldA")
I'll start with an interesting artist that just released a new album last week. Here's a video of Sarah Jarosz, performing "Build Me Up From Bones", the title track of the new album.