Funny/quirky things you've noticed?

[El Caballerion]

Just thought I would create a thread about little things you've noticed in the game that are funny/quirky touches.

For instance, I just noticed that the TRADER unit uses a small carrot on the end of a stick, to get the camel to move forward.

You?

 

[Ranbir]

Mine is when I hover my mouse over improvements I can build in the city production menu, a small jingle/ambient sound track will play.