Season Two
SG-1 return from a long dead planet with a a mysterious orb.
During tests, the orb begins show signs of activity and Hammond orders its return to P5C 353. but before it can be sent through the gate, the orb spouts spikes which pin Jack to the wall.
Other members of the SGC become infected with the organism the orb is producing, including Graham Simmons.
Attempts to free Jack from the orb, fail until Sam suggests they give it energy instead, that works and the organism begins to communicate via Jack. However, it's Daniel who comes up with a solution which will save the orb and the base.