one time in one of my playthroughs i was at the collage in winterhold i just got j'zargo as a companion and i sent lydia back to my home (i think in whiterun).
i soon hear a commotion coming from outside of j'zargo's room, when i came out i saw lydia attacking mages and if i remember right she was out numbered, i was thinking somewhere's along the line of (wtf lydia what are you doing??, because i had here hauling some items i wanted to ether keep or sell later).
what was the worst thing your companion ever done?