I am posting a specific roundtable talk with a group of actresses because I found their discussion about actors knowing their words/lines refreshing and relevant. There are many other interesting discussions to check out as well. There are people we have to work with; and then, there are the people we want to work with.
Thank you, Julia, for bringing this to my attention.
http://www.youtube.com/watch?v=ENUahNNUk0k
This video, starting at 10:50. Connie Britton, then Juliana Margulies talk about the importance of knowing lines.
The other THR videos include roundtables with comedy and drama actors/actresses in both film and tv, directors, writers, showrunners, etc.