A Tough Dance (1902, 7.1MB, 47 sec.)

Bicycle Trick Riding (1899, 5.5MB, 37 sec.)

Three Acrobats (1899, 5.4MB, 36 sec.)

Three exhilarating chunks of early movie making from the
Library of Congress online collection of variety stage motion pictures.
I particularly love the deeply strange A ‘Tough’ Dance.
There’s also a great early animation collection on the LOC site.