What follows is a "big fish" story. It is absolutely true but I have no pictures to verify that it actually happened. Here goes...
Getting to the Mun is easy enough. Do a huge burn, then a smaller burn, wait a long time, small burn...ta da! Mun orbit. Landing on the Mun though, that's hard. Bob, while an accomplished orbital pilot somehow missed the "Deorbit and Landing" class at Kerbal Space Flight School and due to a mix up in paperwork, no one caught the ommission. He thought, "How hard could it be anyway? Burn to kill off orbital speed and make sure the nose points up when landing. Easy." Oh, Bob <pats on his little green head> if only it were that easy.
The lander for this mission is a 1 kerbal command module underslung to a decoupler and RCS tank. From the RCS tanks there are four stock girders radially affixed. At the end of the girders are one meter fuel tanks long enough to keep the command module off the ground when the landing gear has been extended. Why build it this way? Because ladders are for wimps.
The time for deorbit arrives and the burn begins. So far so good Bob, so far so good. With only a 100 meters to landing though, things go a bit crazy. Somehow 10 to 13m/s of lateral velocity have just appeared. "OH MY! That's a crater wall!" RCS isn't doing it's job. Killing lateral velocity is only possible by rotating the whole craft to kill off the lateral velocity. Tumbling, correction, more tumbling. ALMOST CRASHED! Saved! More tumbling....and crashed. Definitely crashed. The command module survived as did the RCS tank and three of the engines. Definitely, not good.
Well, Bob doesn't want to die alone and while he's not very good at showing up for class, he's not stupid. After getting some surface samples and EVA reports (If you're going to die, you as well die after touching foot on the moon)
"Okay, let's try shutting off the unbalanced engine." Throttle up. Nope. Weight is unbalanced. "Okay, let's try turning the unbalanced engine on and hope we get lucky". Throttle up and lift off into a slow tumble. Well, that's not good either but at least we're flying. You can't get back to orbit on just the occasional burn while tumbling. Dang it, there's that cliff wall again. Corrections don't work. And...crash. Again. BUT! it was the unbalanced fuel tank and engine that were destroyed this time.
Bob, now in command of a balanced ship, throttled up and burned for orbit. Despite having a very odd orbit, he managed to have enough fuel to get into an orbit with a 20km periapsis on Kerbin. Home safe!
Kerbal Science Center reports that over 150 science was generated on this mission between the copious EVA reports and surface sample returned by Bob.