Well, there was setting charges throughout the giant superweapon poised to destroy Earth, but that was much more the Captain's doing rather than mine. Risk my hide by disobeying orders to save my friend while trapped on a remotely telepathically controlled ship? Hm, no, had to get him out of a room filling with radiation, wasn't terribly much choice. Taking a shuttle with T'Pol in the middle of the night undetected to go where we weren't supposed to without telling the captain so we could save my friend and her boyfriend. Possibly that one?