James Emerson has written this lovely tribute to and analysis of Buster Keaton's first true feature, Our Hospitality (1923). I really can't say any of it better than Mr. Emerson did, so I urge you to click this link. Reading his piece is going to make you really want to see the film (again, if applicable). Luckily, you can do that right here:*
* It's 73 minutes, so while it is completely safe for work, I wouldn't recommend you watch it there unless your employer has very lax standards. Or your job is to watch great films.