Want to know more about Kali (the Goa'uld)? How about a mission where Sam and Bra'tac team up? More of the mysterious Reetou? Well, the last are a bit under-utilized (I.... know exactly as much about them as I did before reading this), but the first two definitely deliver. Bonus point for more background on the early days of the Goa'uld's dominion on Earth.