A very very good episode with all the marks of what makes this series so good. And further more seeing that this is a two parter it promises lots for the second part.
The ancients return and demand Atlantis back. Nice guys as we are we leave. The dust has not cleared yet and Atlantis is under attack from the replicators and are overrun? Time for our team to head back to the Pegasusgalaxy using the new portalsystem. Good acting, nice storyline, not too sentimental and I am realy looking forward to the second part. A near perfect example of what an episode of this series should be like. Lets hope the can keep this high standard up for the rest of the series no matter how long it will run.