We had the unfortunate occurrence of having the flash on our Nikon D60 camera break and the cost to fix it was about the price of getting a new flash that could attach to the top of the camera.
The external flash would be cool, but as the only flash, it would be a little cumbersome to hook on the external flash every time we needed to take a quick picture with the flash.
We came across a video from Norther Lights that shows what the problem was and how to fix it. The fix took just a few minutes once we had the right precision screwdriver, and viola! we saved ourselves hundreds of dollars in repair costs and time without a camera.
The Internet is awesome! Just a little bit of searching, and we had our answer.