While my answer is about dark souls it wasn't a particular boss fight. My first successful online parry! I was so freaked out because I had finally gotten the timing right that I messed up the riposte XD
Now my success rate has gone up though, after you get your first the others are much easier
The opening of Mass Effect 2...dropped my jaws two times,the second time it fell into the pool of tears.
I have just encountered the following scenario in Skyrim:Sprinting out of Riften a dragon was heard,but no visual contact.Must have been a spriggan out there because all of a sudden,three bears and a troll attacked me,i managed to take down a bear when the dragon landed.
After battle:dead dragon<-->flame atronach,storm atronach(scroll),three undead bears and a troll(awaken bíy ritual stone)