I was lucky enough to see Sha Hwang‘s brilliant closing keynote at UX Burlington 2015 about his work on Healthcare.gov. So I was excited to see that Sha just posted a recent talk he did called Digital Materiality, a short reflection on gifs and gif culture:

gifs are a dumb, limited file format, and in the end this is why they are 
important: they do not belong to anyone. because of their constraints they become a design material, to be played with, challenged, and explored.

Needless to say, there are some really good gifs in that talk…