One day, I was playing Pokemon Diamond. As I battled the leaders of Team Galactic, I send out my Machoke, and my Rival suddenly decides to give my Machoke a Burn. At first I was beside myself. Then I realize my Machoke was doing more damage. My Machoke had the Ability Guts, you see. And my Rival took advantage of that!
What moments have you had where an AI did something that clever?