Incredible...just incredible ! And not just because of Sam Rockwell ;p
Liam James (Duncan) is so understated but he does so much with this role. The writing is great, imo. I was so impressed when I found out Nat Faxon (Ben of Ben&Kate) and Jim Rash (Dean on Community) wrote this. Both do amazing jobs with their supporting roles. The last scene made me cry, and I wasn't even a fan of Pam's characterization throughout the movie (you're supposed to be upset with her for kind of abandoning Duncan). She comes into her own after seeing how Duncan has managed to re-define himself this summer, right under her nose.
I ABSOLUTELY LOVED IT!!