Fire Away (1925)

Nominally about attempts to steal a gold mine, the movie starts out with the air of a realistic comedy, then immediately descends into a series of perfectly timed gags which made me goggle at their improbability -- not the sort of thing you normally think of in a slapstick comedy. Very quickly the unerring ability of ropes to loop themselves around tree roots, stopping Al from plummeting to his death or an explosion to drop him on a bull came to make me goggle again.