The people who can laugh at themselves will never run out of things to laugh at. This is a good time to remember the Golden Rule. Keep it friendly. Humor builds positive relationships and improves morale. With so many projects dependent on teamwork to be successful, open communication is essential.
Laughter is the ultimate icebreaker and bridge-builder.
Humor and creativity are closely linked. I don't know of any companies that deny the importance of creativity. I surely wouldn't want to work for one. To me, the responsibility of the NASA launch teams seems huge. They are working on multi-billion dollar projects, sending courageous astronauts into the great unknown, their every move monitored around the world.