A few of them are Australian enough to be attractive to every demographic. The fact that they never return our calls just makes them sexier.
Yes, we understand that on TV everyone is sexier than in real life. But at least House gave us a 45 year-old Hugh Laurie in the lead and not, say, Daniel Radcliffe. But the rest of these shows give us people who must have graduated high school at age six. It's a universe of Doogie Howsers.
We can think of worse things.
For example, forensic anthropologist Dr. Temperance Brennan from Bones is loosely based on real-life crime author Kathy Reichs. But while Reichs published her first book at 47, her fictional version has already written multiple best-selling novels by her early thirties, while also having time to complete a PhD, learn seven languages, become a skilled diver and expert shooter, and study three different forms of martial arts.
And in the world of TV, she's nothing special. Ziva David on NCIS is an espionage expert who knows nine languages and is a skilled pianist -- all at age 28. Her coworker, forensic specialist Abby Sciuto, is also in her late twenties, but has still somehow picked a PhD in chemistry, bachelor's degrees in sociology, criminology and psychology, and good knowledge of hacking and computer forensic science. FBI consultant Peter Bishop on Fringe speaks five languages, has had papers published in academic journals, and is an expert in chemistry, biology, medicine, computer programming, auto repair, and pretty much everything you can name, all before time has had a chance to ravage his boyish good looks.