Can someone give me the basics on how and when certain credits are used at the beginning and end of films (and even TV shows)? Here are some questions: Why is a director typcially the last in the opening credits and the first in the end credits? and what about "A Film", when do they do that or not? When do they decide to list the stars in lead order, alphabetical order, or appearance in film? Is the last person in the credits always listed with an "And", and why do some actors get an as "" and some do not? Is "Introducing" a designation as an actors first appearance in any film, or commercial film? (may apply to TV more) When do they use Guest Star, and Special Guest Star? Do some actors not get in the credits if they don't have spoken dialog (unless its intentional)? I'm sure there are more questions in this regard. I would welcome more in this vein, but the answers would be nice, too.