My favorite parallel on Castle to date:

why-am-i-narrating:

In Always, Beckett went to the swings and made a decision and then put herself out there and told Castle she just wanted him, no matter what she had to give up.

In Watershed, Castle went to the swings and made a decision and then put himself out there and told Beckett he wanted her, no matter what he had to give up.

This masterfully crafted parallel is utter perfection.