I can't count how many times I've been flying to the airship (horde or alliance) and dismounting to gather/turn-in quests and not knowing a toon lost follow miles ago. Or on the airship and mounting ground mounts and running off, only to watch it rain shaman. Or hitting "E" (my buff castsequence) instead of "W" (forward) while in the air. Most of mine seem to involve flying and lack thereof.