I love Pride & Prejudice (2005) so much because Matthew Macfadyen did the most of any adaptation's Mr. Darcy to subtly convey the character's inner turmoil and emotion throughout the entire movie.
You can see him internally screaming at himself for being so awkward around Elizabeth, or for going too far when he lashes out/speaks too frankly. You can see his longing to be with Elizabeth and his adoration for her every time she challenges him or speaks her mind freely, and the pain in his eyes is so plain to see when he catches himself pining for her only to remember loving her goes against everything set out for him and he shouldn't.
Macfadyen's Darcy tells everything he cannot manage to put into words just through choice glances, and as a viewer, I love it with my whole heart for how it helps us connect to such a misunderstood character from the very beginning.