Ahem, sorry. Not sure where that came from.
When SG-1 rescue a group of technologically advanced aliens from a massive volcanic eruption on their world, it creates problems both for the offworlders - the Tollans - and the SGC. Because of their obviously powerful technology, the NID (National Intelligence Department) send colonel Harry Maybourne to take the Tollans from the SGC to a similarly secret facility elsewhere in the Rockies to learn what they can from them. General Hammond and SG-1 do their best to stop this from happening and while Sam and the Tollan Narim are busy fluttering their eyelashes at each other, Daniel helps their leader Omoc send a signal across (or perhaps through?) space to the Nox, who come to their aid.
In this, his first episode, col. Maybourne is basically just a replacement for colonel Kennedy (who appeared in The Enemy Within) and is just shown as a bit of a tool. Throughout the years he'll be brought back a number of the times and - as you may have guessed by my outburst above - becomes one of my favourite recurring characters.
The Tollans also come back a couple of times in the future, along with Narim's new pet cat, Schroedinger. There's obviously a mutual attraction between Narim and Sam in this episode, but due to them having to part ways at the end of the episode, not much happens. Narim does give Sam a 'recording' of his emotions and feelings about her, and then they kiss a couple of times before being interrupted by Daniel (which is hilarious). It's the first relationship-stuff we've seen for Sam since her ex-fiancé was killed in The First Commandment, but we'll see more soon enough - in the next episode, in fact (Solitudes).
P.S. As an update to the note in Singularity, I noticed in this episode that gen. Hammond started wearing his trademark short-sleeved dress shirt. Now he's really general Hammond!