Who is the narrator in this?

In https://www.youtube.com/watch?v=Ozz-Hsx-QCI , which is the cold open of SNL that’s set in Politics and Prose bookstore and is it the only cold open that ends with the narrator, not an actor in the sketch, saying “Live from New York, it’s Saturday night”?

This SNL Wiki page says the announcer was Jim Downey.

Very well known as a writer.

His most famous on screen role is probably from Billy Madison since it has become a meme.

Thank you. So is there any other cold opening where the person saying “Live from New York, it’s Saturday night” is the narrator, not a actor in the sketch? If so, which ones?