Assuming I'm allowed to actually start this thread---*worriedly rereads the FAQ*---this is the place to reflect on your favorite and least favorite aspects of The Office! Feel free to chat about your favorite and least favorite seasons, episodes, characters, plotlines, funniest and most poignant scenes, etc.
Season 2 is my pick for the 'best' season, but I've surprised myself by kind of overdosing on it to the point where I'm not *quite* as enamored with it as I used to be. Apparently, that's what happens when you watch a given season of TV about 75 times...who knew?! Meanwhile, I've grown more and more attached to S1, S3, and even thank-god-Jim-and-Pam-are-finally-together S4.
My least favorite seasons were probably 6, 8 and 9, though I adore the finale beyond the telling of it.
Oh, and I recently blathered about my 10-12 desert island episodes:
1. Diversity Day 2. The Alliance 3. Sexual Harassment (I found Todd Packer---and, more to the point, everyone's reactions to him---totally hilarious in this one. I don't know what that says about me, but probably nothing very good!) 4. Booze Cruise 5. Drug Testing 6. Gay Witch Hunt 7. Grief Counseling 8. A Benihana Christmas 9. Beach Games/The Job (Can we pretend I'm not cheating by counting these as one?!) 10. Fun Run 11. Goodbye, Michael 12. Zillion-way tie among nearly all the rest of S1, S2, S3 and about 75% of S4... :)
...I'm pretty sure my #12 isn't really adhering to the spirit of the question.
I could go on (and on...and on!) with more Office superlatives, but I'm hoping others chime in!