How to know if you're watching too much TV

I've fallen asleep several times this past week with commercial jingles in my head, over and over, making me feel like I am crazy. The one that was driving me really crazy was "Activia," that sing-songy way to say the word. Then it was "588-2300, Empire" - the carpet people. But last night it was "Five dollar footloooo-ng" - the new Subway ads. You'd think with my background in advertising that I'd find it entertaining, but it's just plain annoying. I think I need to cut back on the TV watching.