If you've worked in an office environment in the last 20 years, chances are you've seen the
Successories line of motivational posters:
Yes, some of the quotes are inspirational, but let's admit it, most of them seem a little cheesy today because really, if all you need is a quote and some stock photo to make you more productive, well:
A number of sites have dedicated themselves to the creation of your very own motivational posters. But Big Huge Labs has done an excellent job of it. Some of the examples that I've found while browsing still have me in stitches.
Go take a look, and make your own right now!