Okay I figure I should lead by example so I'll put up my ranking:

* Season 1

Groundbreaking TV. The best of the series and the best season of TV I've ever seen.

* Season 4

While I disliked the lack of EA from time to time, there were truly some of the best epsiodes of the entire series scattered throughout this season. And the Series Finale was the best Series Finale, EVER.

* Season 3

I loved seeing the EA romantic relationship.

* Season 2

Amy's depression storyline and EVCs brilliant portrayal of it was Emmy worthy. There was excellent writing in this season as well but for me, I put it last only because of the severe lack of EA as well as it not being a secret that I disliked the EM relationship. Every aspect of it in fact.