For the reports, at least.
You know the way many blogs display a calendar, and if there are entries for dates those dates on the little calendar will be bold or colored a bit differently? Then when you clock them you navigate to the entries for that date.
Same for reports. Instead of opening a page with a slew of dates to scroll down, have a calendar control on the main report page, as above. Dates with reports will be indicated. Previous and next month controls should be available, and for that matter a typable year text box.\
Something like that.
Also, when accessing archived reports the view always reverts to daily. If I'm wanting to look at weeklies, pulling up old dates should leave me in week view.
Also, a month view would be very handy.