A rather enjoyable episode. It vaguely reminded me of episodes from earlier seasons when SG1 were busy making first contact with other worlds rather then battling the Goa'uld, Anubis or the Ori. Of course there was no MacGyver and Carter was absent.
I chuckled when Mitchell made reference to one of the antagonists going all 'John McLean'(Bruce Willis' character in the Die Hard movies) and Daniel was puzzled by the reference and it was Teal'c who made sense of it to Daniel.
It's going to be sad to see this great series leaving the airwaves, but I guess we have Atlantis and perhaps an SG1 movie to look forward to!