Shows Run: CSI: Crime Scene Investigation (2000-Present), CSI: Miami (2002-2012), CSI: NY (2004-Present)

It's not just your grandmother who watches CSI. Millions tune in every week to watch the grisly crime procedurals helmed by these two women. Though the flagship show is getting a little long in the tooth after thirteen seasons, original CSI still attracts over twelve million viewers every week.

During the show's prime, over 25 million viewers could be counted on to tune in. For its part, the New York edition of CSI brings in an average of ten million viewers a week. Mad Men's best season maxed out at three-and-a-half million, just to give you some perspective.