So I've been watching vids from various SPN cons for the past few hours - I've seen them all before, but they make me so happy that I'll always watch them again - and I decided what I would ask Jensen and Jared if I ever got the opportunity.
I love the SPN writers, and I think they do a great job. But I wonder if Jared and Jensen ever disagreed with where the writers took their characters, a storyline or a particular line of dialogue, and what they would do if that ever happened. I think that would be a difficult thing for an actor, especially when you've been playing a character for years and years and feel like you really know them.
ETA: Also, I find it really interesting watching them in relation to their characters. I never see Sam in Jared. They're so incredibly different that it makes me really admire the acting job he does on the show even more. But there are definitely times when I see Dean in Jensen...not so much when he's alone, but when he's reacting to Jared, or something rather inappropriate in the crowd. Dean's sarcasm and his sense of humor really pop out. I almost think (and now I'm really stepping over the line and psychoanalyzing him) that he could be using Dean as a defense mechanism. Jen's so shy that when something makes him uncomfortable or embarrassed, maybe he hides behind Dean. This is fantastic, because it totally plays into my Big Bang fic. It's definitely interesting to see.