Bryan: Y’know, one of the first things I notice that has changed about Aaron is that he’s actually able to talk in front of people now. One of the first publicity appearances that we ever made, we’re backstage at a show and he looks like he is going to vomit. He’s edging back and forth and back and forth and I say, “You okay?” “No, man, I’m not okay. I can’t do this. I can’t do this. I can’t do this, I can’t do this!” Now you can do it, look at this! [Aaron: Kind of do it.] You’re doing a great job. You’ve said some wonderful things about me, but I wanna say some wonderful things about you… [x]

Bryan Cranston reads a fan letter he received.

Bryan: The thing I like best about you [Aaron] is your attitude about this and that you appreciate and enjoy the uniqueness and how lucky we are, and I think that keeps you open to experiencing whatever someone throws at you. So, it’s great. It’s really been a joy to work with you.
Aaron: Thanks, man. I tell him, I think almost… almost every time I see you, what a genius man he is.
Bryan: And yet not often enough. [Aaron laughs] Interesting. 

From Breaking Bad’s Season 4 Gag Reel

Aaron Paul and Bryan Cranston for Rolling Stone Magazine