My husband and I watch it all the time, but it's really declined since Aaron Sorkin left.
The liberalism of it bugs me, too--or more accurately, the pedantry. I quite often find myself yelling at the screen when they are out-and-out lying about something.
There was an episode recently about federal mandatory minimum sentences, which they lumped with the federal sentencing guidelines. Now, I used to work for the Federal Sentencing Commission and my boss is a former Chair of the commission, so (a) I know this stuff, and (b) I'm a bit sensitive to criticisms of the guidelines. They got so much wrong in that show, it's unbelievable.