I've been rewatching the first season of our beloved show and right now I'm about a third of the way through. Some points that have arisen from this viewing (and from other sources too):
(1) Good God, the exposition scenes are painful. Either I've become inured or they've gotten much better at this; I think it's the latter. Absolute nadir: poor Sam having to explain, "Rock salt being a spirit deterrent," to Dean, who is handing him homemade rock salt shells. Yeah, Sam, I think he gets it.
(2) I haven't seen any egregious, X-Files-type instances of recycling actors. I've only seen one so far - the first guy to be possessed in "Phantom Traveler" (the "nervous flyer") is one of the cops holding Dean back when he goes all Buster Bluth and says, "Hey brother!" in "Hook Man" (see my default icon). Nicely played, show.
(3) The boys' commentary on "Phantom Traveler," meanwhile, is bizarrely boring. Though I did appreciate the Rolex crack and the love they gave to the crew.
(4) In "Wendigo," when the boys are interrogating the only known survivor of an earlier attack, Dean (or rather, Jensen, because there is simply no way this is in the script) wipes his nose on his hand and then looks at it. That will never not be funny to me.
(5) What is the name for that group of guys who all swim in really cold water during the winter? Polar Bear Club? Something like that? Does that exist in several places or just one? (It's for an upcoming fic.)
(6) Rewatching these eps, I keep recognizing moments from the gag reel (and various icons I've seen). We really do have the most hilarious, beautiful boys.
(7) The first ep I ever saw was "Faith," but let's pretend for a moment that I'd started with the pilot, as Kripke intended. The pilot is an amazing episode. It gets quite a lot done, in terms of plot advancement and viewer investment, but I think its greatest strength is that it makes me believe completely that these two boys are brothers. And there's a moment that I've loved ever since I saw the ep, that made me realize that Jensen Ackles owned the character Dean. He and Sam are questioning the dead guy's girlfriend, trying to figure out what's going on in Jericho. He's clearly thrilled to have his baby brother at his side. At the same time, he's out of his mind with worry for his dad. Plus he's realizing that he and Sam on their own really do work very well together. Anyway. He and Sam are questioning Amy and her friend and Sam says something (I think about her pentagram necklace) and smiles and Dean glances over, all "how are you getting these results?" and when he sees that Sam's smiling, he smiles too. It's nowhere near as innocent a smile as Sam's, because he doesn't HAVE that innocence that Sam so craves, and he knows that his own social skills are dubious at best, but he sees that Sam's approach works and he rolls with it. It's a tiny moment, but it worked so well for me. So. I'm curious. What are some of your moments of being blown away by the acting?