One of the things I've learned - before I would go on a show, I was like, "Oh God, I hate that show" or "That show is gonna get canceled." But now after being full-time on a show, you see how difficult it is and how much work goes into it and how so many decisions are based on finances or people's schedules or talent or location issues. It's a miracle that anything gets made.
You never know when you're on a show if you're actually going to love it. For the episodes that I'm not in, I read them, but I try to just forget it, as long as it isn't important to my character. That way when the episodes air I get to watch it like a fan and actually enjoy it.