Your CD collection, asset log for a one man shop. Some weekly performance graphs, it's a good tool.
I've seen it used well in professional systems as well.
Had a 'debate'

with one guy who uses it as back end for web server systems. He called that 100s of users, in actual fact it was one, but the guys on the other end don't know that.
He also called it big (100M) , I guess I'm a bit of a size queen, I've worked on tables bigger than that.

Scalability is an overarching requirement in the environments which I work, Access just doesn't cut the mustard on that front, and it never will and still be Access.