Bill Maher brings a skeptical eye and a rational viewpoint to a lot of current issues. On some, though, he is clearly in error. The problem is, people who like him might be tempted to give him credit on topics on which he deserves none because of other, legitimate views he holds. That is why I believe it is important to highlight a couple of posts from Pharyngula.
On vaccines, Bill Maher is wrong and PZ Myers and others call Maher to task: here, and here. And Tara C. Smith, Assistant Professor of Epidemiology at the University of Iowa, explains why she will be getting her kids the flu shot.