Tony's final plan to get Jeannie out of the moon safe. It's a pretty cool operation that the IMF would appreciate. It also shows that Tony, being an astronaut, can be very clever and daring when he needs to be.
Made even more awesome when Tony finds out the safe is going to self-destruct in a matter of minutes and he has to defuse it. It's surprisingly suspenseful, and Tony pulls it off like a pro.