I asked Codex to code me a simple blog (this one). This it did wonderfully, so I also asked for YouTube embedding support. It promptly added it, and embedded Rick Astley as "a test."

I love an AI with good musical taste. Although, not everyone shares my love for Rick. My mother refers to him as Sick Parsley.

So here you go - courtesy of Codex.

https://www.youtube.com/watch?v=dQw4w9WgXcQ