What's the oldest movie you've watched/seen?

[Naruzeldamaster]

To be clear, I don't mean seeing clips out of context made for funnies on the interwebs.
I mean, fully sat down and watched it.
I could be wrong but for me I think the oldest movies I've seen is either Old Yeller or the OG Wizard of Oz

 

[Insolent Lad]

I think that might be the original 1918 silent version of Tarzan of the Apes with Elmo Lincoln in the title role.

 

[Ned Marcus]

I've seen extracts of earlier films, but King Kong (1933) is the earliest one I've watched from beginning to end.

 

[Orc Knight]

Prehistoric Peeps, 1905.