I agree that this season has been pretty darn good. From what I've read online, I'm in the minority, but I'm of the opinion that each season has been better than the last. Among my friends I'm in the majority, but from what I read, a lot of people didn't care for either season 3 or season 4.
I think this show is like Harry Potter...it gets better with every chapter.
And I am SO on board with Emmy nominations for Jim (duh), Johnny, Simon, and most especially Mayim.