Here is a video of Semon in the 1925 film,
The CloudHopper:
http://www.youtube.com/watch?v=dL84dYicdE0Reading about Semon's demise is quite sad. The story surrounding his death, as recounted by his wife, is rather mysterious. The
Wizard of Oz was a financial disastor for Semon and he never really recovered. Some of his shorts are quite enjoyable. As Derek noted, he was never able to elevate his films to the level of the "Big Three." Still, there is much to enjoy in his films.