
1) The Help Text on custom fields is saving me time already - no more "what's that field for" questions. However, you can only see the help text if you open the record. My users frequently look at a related list of opportunities under an account and are unsure about a field.
Wouldn't it be great to be able to see the help text for the column headings?
2) The new functionality allowing records to be edited in a View is a huge step forward, and we're particularly using them for cleaning up missing data - wouldn't it be great to have some guidance in the form of help text available on those columns too?
Of course, I also want these to be combined with the ability to add help text to standard fields (see http://ideas.salesforce.com/article/show/98366/Help_Text_for_Standard_Fields) and the option to show help text on a click, rather than a mousover (see http://ideas.salesforce.com/article/show/10092615/Help_Text_on_mouse_click_rather_than_on_mouse_over)