One of my first times playing; I think my character was maybe 3rd level. I was meandering around some ruined fort just west of Roxy Inn (I forget which one), I was preparing to enter the door, buffing myself with detection spells, when an NPC Khajiit adventurer comes bolting out of the door with a summoned scamp companion, and rushes right past me. I was quite confused, spinning about to see what was going on, when the troll that was pursuing the NPC exited the door, and decided I was easier pickings than the Khajiit. Scared the bejeezus out of me, and took me down in about two swipes before I even had a chance to draw my sword.