An interesting bit of work done at Wichita State University, where researchers asked participants to mark on a blank browser window where abouts they expected to see certain features - the home link, the search box, and so on.
This grid highlights where most people expect to see a 'Back to homepage' link:
Where's the Search? Re-examining User Expectations of Web Objects - article by A. Dawn Shaikh & Kelsi Lenz
Usability news is published online twice a year by the Software Usability Research Laboratory at Wichita State University. Lots of great stuff in there, although it can be a little heavy and academic for the casual reader.
Usability news archive