So good old stating the obvious is always good. A picture is worth a thousand words. The second item, navigation, is usually not such a problem. Finding the site controls is usually easy, but determining where you're going from the labels on them isn't always so easy. Again, you can't beat plain and simple.
Movement is usually good.
But if it's tacked onto the lower priority elements on the page and upstages what's important, then it's better left off. Some of the Web's best sites give you this feeling. It feels like other people go there and are there. It's obvious because they invite you to become part of the page. Inter-active is the buzzword here.