We hardly ever use our system. But in the mornings, the first thing I do is turn on the music by flipping on the digi-music from the cable co.
Then when I go out to the kitchen I stop at the living room to flip that system on the same digi-channel. During the days, my dad watches the main TV, all day! Then when I get home, I watch the main TV system. It's tough to catch up on all the HD shows the DVR records for me. Then later, I'll go to the bedroom and watch more shows that, that DVR has saved for me. Then, before sleep, I'll set it on a 90 minute timer for another digi-music channel. On weekends it gets used a little more. Even watch a movie or two.
Other than that, I never use my systems.