This is a promotional website for internet explorer which also happens to be an interactive web comic written by Edgar Wright (Shaun of the Dead, Hot Fuzz) and illustrated by comic/concept artist Tommy Lee Edwards.
Obligatory social/interactive elements aside, what is interesting, I think, is how the narrative is conveyed over time. It's essentially a very polished animatic, but isn't jarring and doesn't come across as 'incomplete', despite the lack of detailed character movement. Lots of little visual tricks here for those of you wanting to be ambitious with animation without requiring an army of workers.
The site also has a 'behind the scenes' section with videos showing creative and technical processes.