If you’ve got a recent harmony remote such as the Harmony One and have hard to remember 3 or 4 digit TV channels, setting up favorites can be very useful. Then you just have to select the channel on the remote and the right numbers are sent. To make things even prettier, you can define icons for each channel.
A great place to download icons is iconharmony.com. The interface is a little strange but you can search for each channel icon image you want and select it. Once you have selected each image you want, you can download them all in one zip file. You use the logitech harmony remote software to define your favorite channels and browse files to assign the icons.