You never know true beauty until you see Earth from space, or true horror untill you hear someone knocking on the space station door from outside.
You look through the porthole and see an astronaut but all your crew is inside and acounted for. You use the comm to ask who it is and he says it's Ramirez returning from a repair mission, but Ramirez is sitting right next to you in the command moduel, looking just as condused as you feel.
When you tell 'Ramirez' this over the radio he starts banging on the door loud and hard, begging you to let him in, saying he's the real Ramire. Meanwile the Ramirez inside is begging you to keep the arilock shut.
It really puts life on Earth into perspective.