Oh sure mention Walter and there he is.
I honestly hadn't read any previews or anything.
That was an amazing episode. I really liked the flashbacks and seen young Laurel and Ollie. The casino scene was cool, especially when Oliver pushed the guy through the door, and when the other guy broke a pool cue on Oliver and he just stood there
Felicity had loads of lines that made me laugh. I liked the brief scene between Laurel and Tommy, and the romantic in me got a bit too excited at the last scene between Oliver and Laurel.
I'm glad that Digg is being brought back into the fold.
Best bit of the episode? Oliver hang gliding into the enemy base lol.