Stargate SG1 - Small Victories

It's time to start Season 4 with Small Victories! We get the introduction of Teal'c's chin worm and they got to film on an actual Russian sub. The Asgard want OUR help? Sam is just dumb enough for the task! Why haven't the Replicators figured out how to toss their blocks as a type of projectile weapon? Can any Replicator become a queen?