One of Charlie Chaplin's many short comedies, "One A.M." is essentially a one-man show, and while it is purely slapstick-oriented without any of the depth of Chaplin's later films, it's pretty good. Except for a brief appearance by a cab driver at the beginning, Charlie is on-screen alone for the entire film, as a man returning home after a night of carousing. All he wants to do is go to bed, but before he can go to bed, he has to get up the stairs, and before he can get up the stairs, he has to get inside the house - but in Charlie's condition, each step is fraught with peril.
The film starts somewhat slowly, but gets funnier as it goes along. Chaplin shows off not just his comic timing, but his acrobatic skills as well - some of the stunts are pretty impressive. While this is certainly not one of his best, it's worth watching.