Very cool article, outlining some common & simple screen design patterns - for both web and desktop applications. Be sure to check out the 2010 Update as well.
I always tell students in our training classes that they should not try to re-invent the design patterns used in most applications - especially since they are database developers and not graphic designers. Users have come to expect specific things to be in specific places - login/logout in the upper left/right, a site map of sorts at the bottom of each page, tabs for navigation, etc. Deviating from that expectation will likely create more confusion than anything else, and should be avoided at all costs.