I was in the Followers of Ascension camp in Skyward Reach and I found myself completely distracted from what I was doing by listening to the kids running around playing ascension. It was hilarious - especially when they "fight" the doppleganger and are recreating actual tactics players used in GW1, like getting it to sacrifice all it's health with necromancer skills.
I love finding things like this in the game, it's a really nice surprise. Especially because it's a great mix of lore/references to the previous game and amusing dialogue, and very much like real-life kids games.
I'd love to hear about other random things people have found and enjoyed seeing/hearing/doing too.
"You can run like a river, Till you end up in the sea,
And you run till night is black, And keep on going in your dreams,
And you know all the long while, It's the journey that you seek,
It's the miles of moving forward, With the wind beneath your wings."