Stuart, ...people/show and ...people/list are also not being picked up. could you have you over ridden the basic scaffold and only completed one of the views (edit)?
Stuart, what does your list.rhtml file look like int he views directory? verify the name is "list.rhtml".
have you tried restarting webrick to see if it just isn't seeing changes you've made?
if list,.rhtml exist and is in the views directory, you may want to test out the connection. delete everything in list.rhtml and type in <p>here</p>.
try to load the page again and see if "here" is displayed.