A nice water filtration system for the breakroom (with a water heater/cooler plumbed in) was an investment that has payed for itself over and over again, and I find we all drink more water which is a good thing:
http://www.h2odistributors.com/h2o-ucf-03.asp
http://www.h2odistributors.com/bottl...er-coolers.asp
Oh, and the coffee is really much better too!
DT