For many of us, the comforting chime of a familiar TV show theme song can feel like a warm embrace after a long day — I don’t know about you, but sometimes when I don’t want to deal with anxiety, stress, or deadlines, I’ll watch “The Big Bang Theory” or “Friends.” Shows like “The Big Bang Theory (TBBT),” “Friends,” and other classic sitcoms have become the equivalent of a soft security blanket that we wrap…