Replacing the pendant light in the breakfast nook was the first home improvement job done once we moved into our mid-century ranch, and for a while everything was perfect. Then the light started to flicker every once in a while, so I replaced the bulb and things went back to normal for a while. Then the light started to flicker every time we turned it on. So I did some research and found out CFLs and dimmer switches, which the nook happened to have, don't get along so well.
A couple of minutes, a new light switch and a new switch plate later and things are working as they should again. It's the first home improvement project of the new year.