Hellofax rocks my world
It’s kind of rare for me to pimp out products and services on my blog, but I’m going to do so just this once. 
I really despise faxes, but occasionally I do have to send them in the course of some of the admin work I still do on the side for my old consulting company (address changes, etc.). If you’re in a similar boat, you really owe it to yourself to check out hellofax.com. It’s about three gazillion times better than any other similar service that I’ve tried (which were all embarassingly bad: I’d sooner just go to a copy shop) and has saved me hours and hours of time and frustration.