So I lost interest in Elder Scrolls 4 after doing some extensive overhauling of my experience with New Vegas but now I'm back so what's different in Skyrim this time around? And I mean the smaller things that you'd only know from buying the game. So I already know about the graphics, new engine, and the new combat engine/streamlined menu.

How about gameplay and character interaction? I'd really like to know what this whole new AI system brings to the table.