Beyond 47 minutes of nerding out at the cast, producers and George RR Martin - and Jason Momoa stealing the whole show - there are interesting tidbits to be had here. Martin defends his penchant for killing beloved characters, the grass roots "Bring back Khal Drogo" (or "maybe he has a twin brother somewhere") effort begins, and perhaps most importantly, writer-producers David Benioff and D.B. Weiss share some of their plans for how to adapt the rest of the books for the series (it won't be one book per season like before.)
I think you are wrong about Jennifer Aniston. Watch Friends With Money or The Good Girl sometime. I think she even did a fine job in Picture Perfect for what it was. This was a great movie, and its worth seeing for the supporting cast alone.