This episode was a little bit of a break from what Atlantis is all about, mostly because they are on earth. It felt strange to see two of the main characters chasing bad guys there. Oh well, it's a bit of a filler episode and a back story on Sheppard. We get to learn about what his growing up was like and that he left home willingly because he didn't want to live his life like his father planned.
I never saw Ava as a replicator, that was a big plot twist for me, and I am glad they didn't actually let her go live her life on earth, because that would have been too unbelievable. But they still have to power the VR world for her indefinately. Oh well.
Overall, good episode, look forward to more actual Atlantis/Pegasus episodes coming up.