Sorry if these two have already been mentioned.
There’s two BR movies which I recently watched that seem like they have sub 20hz but have not found a waterfall/graph.
The Christmas Carol – the new one with Jim Carrey. There was one scene in particular where Scrooge and the Ghost of Christmas Past was flying right around the 32minute mark of the movie. I could not hear any bass but felt one or two quivers in my chair that has me thinking this must be some Low Hz content there.
Unbreakable with Bruce Willis. There’s a scene at the beginning of the movie where Bruce Willis character was on a train in motion, there was other trains going the opposite direction. When those trains passed by, the turbulence was impressive. Growing up in NJ and using the subway to go to NY from time to time really made me appreciate how realistic this scene felt and sounded.
These two may be worth checking out.