1. Open a window for some fresh air.
2. Suddenly remember that the airlock door is supposed to stay closed.
3. Play "light the bonfire" with the emergency supplies.
4. Walk the dog.
5. While in deep space, explain, in detail, the concept of black holes.
6. Reinvent landing procedures.
7. Install windscreen wipers, because hey, you never know.
8. Conveniently tear a hole in the ship's hull.
9. Discuss last night's episode of "Lost in Space".
10. Open the oxygen tanks to see if there really is oxygen inside.
11. Use the ship's rocket engines to cook up a meal.
12. In an intensely silent moment yell, "My God! The door!"