I grew up watching sitcoms such as Seinfeld, Roseanne, Simpsons, etc. etc. in other words mainstream television. Over the years many sitcoms have come on the air and of those a very small percentage are genuinally smart and funny. The War at Home is a prime example of the majority of modern American comedy.
I give the show a 3 out of 10 because it is what it aims to be, a comedy, but it doesn't seem to go out of its way to be a good comedy. A good comedy should have you swept off your feet with its big jokes, you shouldn't be able to see them coming and in TWAH I see just about every joke coming. The characters are probably the most simplistic and horrible stereotypes I have seen yet on screen, and the acting isn't very good save for the father who portrays a stereotypical beer drinking sport loving American idiot perfectly.
Poor acting, unbelievable characters, and jokes that don't catch you off guard detract from this show to a point of where it is unwatchable. If you don't have cable and would like to see a comedy worth watching, try Boston Legal. It is more worth your time.