I think Pixar does a great job at this. In Brave, the mother doesn't speak for most of the film, and the brothers don't at all. But you have no doubt what their personalities are like, and I wouldn't call any of them weak characters. Likewise, the film Wall-E is one of my favorites because Pixar used very little dialogue to tell their story, but you still end up emotionally attached to the characters. Their shorts, of course, almost never use words and are always spectacular. And, can anyone forget that short montage in Up! where you see Carl and Ellie's lives pass by? I know people who have cried at that scene.
In keeping with my topic, I'm going to shut up now. Enjoy these videos.