Okay, what's going on? They've taken my regular SG1, and replaced it with Folger's Crystals? We're still not breaking the four-star barrier, but in the last third of the season they left two-star land with style. This one's a corker...visually scrumptious, with strong dashes of menace. Jack is beamed aboard an asgard ship. Thor is dying, his vessel being taken over by a lethal new enemy - the replicators, robot bugs that know nothing but consumption and reproduction (hmmm, it's a shame i'm not a bigot, there's a great illegal alien joke in there). Teal'c and Sam beam aboard for a possible suicide mission. The stargate is sacrificed in a rescue attempt. Suddenly, SG1 is acting like a book i don't want to put down.