Oh my god they are so fantastic together, I love how happy she is to play Michael's games. It's such a sweet contrast to receptionist Pam's constant reluctance (although to be fair Michael directed a lot more awkwardly sexual comments to Pam than he does to Erin). I think the ultimatum episode was their best, but they were so great in the one where she and Andy break up too.

SHE WOULD HAVE BEEN THE BEST PART OF BRIDESMAIDS IF EVERYONE WASN'T THE BEST PART OF BRIDESMAIDS.