Three hours of a bloke slowly realising he probably shouldn't have built the thing he just built.
Fun fact: Kodak had to manufacture new IMAX black-and-white film stock for this film because none had ever existed.
A clown living in a sewer somehow made an entire generation afraid of storm drains.
Fun fact: Bill Skarsgård can naturally move his eyes independently, a trait that required no CGI for Pennywise.