Shatnered!

I am intrigued by the thought process that preceded this performance. Could it have gone like this?

Let's have William Shatner sing a song on television...but he can't sing so we'll either need to find someone else who can, or we can stick with Shatner and just let him do something besides singing...well, what can William Shatner do?...I know! He can speak and smirk; let's have a speaking and smirking performance set to music!