Overscroll
The unwanted effect when using a Cable DVR remote to find a show in the recorded list screen. There's a button press delay, so going too fast will cause you to pass the item you're scrolling too. After getting frustrated, a cycle begins of passing your show in each direction, several times, until you get enough sense to slow down and wait a few seconds for the clicks to register.
I was trying to watch Lost on my DVR, but I overscrolled and ended up going all the way to South Park.