That picture at the 42-second mark is of The Shawshank Redemption’s corrupt Warden Samuel Norton, as portrayed by actor Bob Gunton.
And while his death all those years in Castle Rock’s history probably won’t have any overarching effect on the plotline, the fact that there’s a film-to-TV connection is pretty incredible, and potentially opens the door for more.
(Especially since Pennywise himself Bill Skarsgård is playing one of the people inside the show’s Shawshank.)