A recent survey conducted in The Korea Times office in Seoul is a good illustration of how badly some are addicted to paper cups.
On an average day, there are about 20 reporters in the news room. They were found to throw away a total of 242 paper cups in the span of six days, roughly 40 cups per day. The figure boils down to at least two paper cups per person per day.
Read more at www.koreatimes.co.kr/www/news/nation/2010/07/113_70355.html
A much more creative way to use coffee cups…
Unfortunately, I don’t think any of the cups in this video were reused, but if you’re going to use a disposable cup, at least think of creative uses for it after (or before) your coffee is done…
Source: Mona latte: Da Vinci’s Lisa masterpiece recreated using cups of coffee, Daily Mail (UK)
A clip from the film that is (partly) about reusable cups (except the last skit). 
Coffee and Cigarettes, a film by Jim Jarmusch.
An interesting product, as a cool looking reusable cup and it makes coffee too.
The WMF 1 coffee pad machine can be used nearly at all places where you want to enjoy a cup of freshly brewed coffee, whether in the office, on the terrace or even in the bedroom. In less than one minute your WMF 1 prepares a cup of flavoursome fresh coffee. The water tank contains the volume you need for one cup of coffee. Thus, you will always brew with fresh water. Insert a standard coffee pad of your choice into the pad holder. Just press the button, and in less than one minute your cup of flavoursome fresh coffee will be brewed.
