One of my largest problems at my job is finding interesting work or making my work interesting. Without having the physical exertion associated with an outdoors job, having something that keeps you actively engaged not only increases productivity, but also personal enjoyment and quality of life. Basically, if you don't find your work interesting, you're not going to want to do it.
[caption id="" align="aligncenter" width="576" caption="My cat sometimes attacks the chair in her more crazy moments. She is always interesting, but I don't work with her."][/caption]
Finding interesting work, or ways to make your work interesting, is not a very easy thing to do. But I find that sometimes those things that are boring are excellent opportunities to find ways to automate and therefor make a computer do instead. This serves two main purposes. The first is that you're no longer doing boring work, a computer is. The second is that you just created some interesting work in creating a way to automate the boring stuff. Typically the stuff that's boring is something that has no uniqueness to it and you have to repeat over and over again, which is the perfect target for automation anyway.
For example, testing is boring. Going through and finding all of the areas where your program can break and trying to make it happen can be a drag, especially when you have to do it for every release. However, creating automated tests is more interesting. This is especially true if you add extra flair such as making lava lamps turn on when a build breaks, or integrating it with an sms service that sends you texts every 5 minutes that the build is broken, causing you to drive back to work at 11pm to fix something wrong with the continuous integration system itself since the ops people decided to shut down one of your auxiliary systems. Ok, that's less fun.
Having a passion for what you do and having your work be interesting is critical to your success in life. Hating what you do for a living and finding your work boring will just cause you to be bad at your job and unhappy in general. If you're unable to discover a way to make your work more interesting for you, maybe you should consider changing career paths.
I don't have any great suggestions for making any boring work fun. I know from experience that I personally enjoy taking any project and attempting to find the most elegant way to solve it with the best performance possible. Making sure that everything has documentation and that the unit tests cover over 90% of the code gives a wonderful sense of satisfaction. But any sort of goal that yields a high rate of satisfaction should be targeted as something to strive for in your day to day working life.