One of my all time favorites, the original Planet of the Apes!! Yeah, I know the quote up top is from the sequel, but it's too good not to use.
Another collaboration between my iPhone and my desktop computer. Most of the work being done on my phone and it sat there for a really long time too as I was so dissatisfied with how it was turning out in the early stages. My reference was blurred and was too low in resolution but in the end, I think that helped with the "rougher" look.