And I Must Scream: What Rhadamanthys subjects his host, Luis, to - being devoured alive by fire ants that sound like all the girls he's brutally murdered.
Asshole Victim: Rhadamanthys usually selected criminals who had committed grave sins as his hosts. The host would be mentally tortured for their crimes, both satisfying Rhadamanthys' sense of justice and allowing him to satisfy the sadistic side of his Goa'uld nature discretely.
Groin Attack: '"If a Jaffa male strays," Teal'c said grimly, "and comes to his wife with the belief that he may be with her without consequence? He knows that the knife is always hidden somewhere. And Jaffa women are very adept at wielding it."'
Pay Evil unto Evil: Rhadamanthys chooses hosts who were evil so that he can take out all his inherent sadistic impulses on the host, who ostensibly deserves it, rather than on the innocents around him.
Rage Against the Heavens: The Spark version of the myth of Icarus features Daedelus stealing the secrets of the gods, storming Olympus, and overthrowing the Greek pantheon. Agatha has a very similar attitude towards the System Lords.
Rant Inducing Slight: Daniel has one after he and Agatha land from using her jetpack. Samantha has one seeing the Jaffaclank, and after seeing Agatha's self-reproducing clanks.
Agatha has a similar one after discovering just why her uncle wanted her to wear her locket.
Sanity Slippage: Agatha goes through a brief one in chapter eight. Then again, given she's a Spark, one could reasonably argue that her powers are based on sanity slippage.