I know they are recallable channels on some systems.

On a related topic, is there an easy way to set temporary favorites? With my old DirecTV system I could scroll through the channel guide and load up to five channels into a temporary favorites guide that I could quickly rotate through. Those five stations would remain until manually removed (even if I surfed other channels in the main guide) or until over written by another channel.

I find that even with many more channels now than I had with DirecTV I actually watch much less because it is a pain to scroll thorough the guide and find things to watch, and with the "last" button you goggle between two channels anyway.