The only site that I have seen do the sticky header well is t-mobile.com. If you’re scrolling down the page, no sticky header! This makes sense as one would *rightly* assume that I’m trying to read the content on the page. But… if I scroll slightly up, the sticky header appears, giving me access to all header navigation. Perfect, just when I need it!
Their footer animation is quite schnazzy, though not as useful, since it feels like it would need to be loaded with most important content last… (actually, playing the video, not sure if it’s there anymore…)
But anyway, I do know that the header makes me feel like someone cared *every time* I use it. The details make me happy, and makes me more likely to suggest that the people who get to craft these experiences are also happy, etc, etc, etc 🙂