The National Geographic Channel's #1 rated show is a reality show centering around Cesar Millan helping owners correct problem behavior with their dogs. Okay, that doesn't sound terribly compelling, but the show is actually well done and worth watching, particularly if you're a dog lover.

Cesar Millan is probably the best know dog trainer on the planet. So a lot of folks who watch his show might be surprised that he crossed illegally from his native Mexico in 1990 and was an illegal alien for several years. He's now a permanent resident and on his way to citizenship.