This is one of my favourite scenes ever, never mind for this episode. I loved the big reveal of the Trickster being Gabriel, his insistence that Sam and Dean step up and play their roles, and most of all that Dean demands Cas back through threat of grievious bodily harm.
I love that the second Cas gets back he looks right at Dean and Dean asks if he's okay. *happy sigh*
Dean might take advantage at times but he really does care about his nerdy angel in a dirty trench coat.
"First you're going to bring Cas back from wherever you stashed him."
"Oh am I?"
"Yeah, or we're going to dunk you in some holy oil and deep-fry ourselves an archangel."
*Gabriel clicks his fingers*
"Cas, you okay?'
"I'm fine."