I'm not sure what was worse, departing before dawn with my luggage door open. Or starting a very cold engine in Buffalo, getting taxi clearance, and then realizing the chocks were not only in place but frozen to the nose tire.
But when I was based in Portsmouth VA (KPVG) in the early 90s I was spending time at the maintenance hangar when a Cessna landed and taxied in. Pilot wanted to have his brakes checked, since they wouldn't release when he tried to taxi from his tie down as KSFQ. When we walked over, we noticed the tail tie down rope was still attached, along with a large eye-bolt and a small amount of concrete. His brakes were fine, but it apparently took a bit of power before he was able to break loose from his tie down spot.