I've got a couple I can remember:

The winter of '95-'96 I lived in Danville and we had this big long driveway that used to drift at the end. We'd gotten some snow and quite a bit of wind, so the bottom was all drifted, probably 5' deep. Dad decides to take me to school in his plow truck and just plow on the way out. Well, he underestimated how deep the snow was and pretty soon there's just a 7' tall snowbank at the end of the driveway that he can't move. I ran up to the house to call my best friend to see if they could come pick me up at the end of the driveway but no answer. So I had to walk to school (about a mile), including climbing over that 7' drift. Mom called and let them know I'd be late but was on my way...

The second one was Valentine's day 2012. We'd gotten a pretty good storm the night before, probably 14" or so. My ex-husband had left a little less than two months earlier, so it was my first winter dealing with all the snow shoveling, etc. on my own (lived in town, so it was manageable, but when you're depressed and heartbroken and broke, it's a lot to deal with). I woke up Valentine's day morning to my dog barking. I looked outside and my neighbor's teenage son was shoveling my walkways for me. I'd lived in that house for almost a decade and had never really met most of my neighbors other than a passing hello, but they obviously noticed I was there alone and it was really touching that they'd do that for me. Still makes me tear up thinking about it. All I could do at the time was stick my head out the door and yell thank you to him.