My favorite PvP moment happened just a few weeks ago.
I was doing Twin Peaks and the score was 2-2. We had the Alliance flag and with a group of 3 I was (as elemental shaman) chasing the mage who was carrying our flag. The mage had taken some damage. As I walk up the bridge to the Stronghold, I see the mage just hurrying around the corner. While suddenly an alliance feral appears and the paladin next to me to pieces chops, I manage to shoot a Lava Burst at the mage, bringing his health to 5k.
I'm desperately trying to run after him, but the feral has now started to kill me. I earthbind, and thunderstorm and the whole lot, while throwing instant spells at the mage, knowing that the feral will interrupt me whenever I hardcast.
The mage gets to 1k health, but then he uses a healthstone or something and gets back to 12k.
This goes on for about 15-20 seconds, and I'm really low on health.
Then the mage goes around the corner, into the flag room, with just 1,5k health left, out of my line of sight.
I'm now at around 20k health and the feral is still on me, and I'm whole alone. I walk around the corner, and there is the mage, lying on the floor. My Flameshock DoT has killed him.
The flag is right in front of me. I dash the last yards in Ghostwolf and with my dieing breath:
'Tithonanka has returned the flag'
Which won our game
And ofcourse, thunderstorming 5 people at the same time into the abyss in EotS is awesome too ;).