I’m a web developer in my day job. I work the front- and back-end, and I have to practice good typography as part of what I do.
My commute takes me by this piece of work at a car rental place:

The problems with this are many:
- ALL CAPS
- Grocer’s Apostrophes
- Different styles of Grocer’s Apostrophes to boot
It’s some small consolation that the shop is out of business, but it has more to do with the lackluster California tourist industry, not the poor signage.
In the meantime, this will be an enduring collection of many of my pet peeves.
Edit: add link for Grocer’s Apostrophes