What a disappointing end. Action yes, explosions yes. But really, "five seasons have lead to this?" *Spoiler alert
Suddenly Atlantis has a new drive technology? Suddenly Todd agrees to give us two ZPMs? And when Atlantis gets to earth where does it end up: San Francisco Bay?? We could have least crashed it into the Atlantic and had it sink.
In addition, there was no arc of the storyline in the series, no coherence. (If you seriously dispute that idea, just look at the penultimate episode in Vegas.)
It would have been much more powerful if it had at least been spread out over two episodes, or if the writers had had the wit to build the store line coherently over the course of the series.
I'm sad to see the end of the series, but this is no BSG.