"The Cheat", 1915, starring Sessue Hayakawa and Fannie Ward (click their names to view their Wikipedia bios). This silent film surprised me how sophisticated and intense it became. And, you've got to see the free for all in the courtroom. I won't tell too much about this film because I don't want to spoil some great moments, but let's just say things get heated.
This is the first film I've seen with Sessue Hayakawa, and if this is a typical film of his, I want to see more. It's quite a film for 1915 - yeah, that's 95 years ago.