I love that show, probably as much as I love the original UK version.
I prefer the later episodes, when they have departed from the rough storyline laid out by Ricky Gervais and co, and gone in their own direction. There are some really great characters and situations.
Dwight is easily my favourite - I think I find him more amusing than Gareth, his UK counterpart.
Some of my favourite Dwight quotes:
"Do you wanna die Phylis? Do you wanna die?!" (ushering her out during the fire alarm)
"Sabotage: the ancient Dutch art of screwing over your own team"
"False. I do not miss him."
"You haven't asked my salary yet - - Eighty...THOUSAND dollars!"
"Totally got the better of that interchange" (after the cough battle with Andy)
"No, Michael. Not me. Tell him...not me" (dressed as Darth Sidious, referring to the papiere machet head on Michael's shoulder supposedly whispering who to fire)
And those are just some from the top of my head. It's definitely one of my favourite shows.
People should really watch the UK series as well though, classic stuff.