For me, it's this one:
It has a sad story though.
Those photos are taken the day my friend from work got fired for no reason.
You can see that I cried on these photos. It was one of the worst days of the year and it has such a big impact on how I feel at my job now. But I'm really happy that we took the photos and that I was able to scrap them.
I have a coordinating journal page in my yearbook that tells the story of what happened that day.