ARGH, I'm so inspired by Cas/Hannah that I keep trying to come up with some kind of related episode tag, but as I felt about S2-S3, everything I want to have happen is already happening, so I just want to revel in the joy of letting someone else create exactly what I want to see. :-D
I wish they'd make them weirder and more stilted, Hannah's angelicness more alien, but it's still pretty good, and I LOVE seeing how far Cas has come in understanding how humans behave by putting him with an angel and hearing his insightful explanations of human motivation: [spoiler ...?]"... so that they don't have to talk about something they can do nothing about." Aww ....
Even Hannah's terrible clothes (the pants, mainly) are growing on me, because like any angel, it wouldn't occur to her to change her vessel's clothing once she's possessed her, and evidently her vessel had incredibly bad taste ....