When you attempt to dock and succeed at reandevous, except the other craft is going 300m/s in relation to your craft, and through it, and proceeds to smash both crafts into dozens of 'probes' When you successfully launch a perfectly keostationary satellite (it was beautiful, 5m difference from apoapsis and periapsis, 0°inclination, directly over KSC) and while sending the manned craft that accompanied the satellite, your forget parachutes . . . and that jebidiah, bill and Bob were in it