Trademarks, okay and not okay

Hi folks:

A couple of examples of trademarks that did and didn't run into trouble. Several years ago a community theatre group, in a church basement, decided to call itself "The Other Fox". The management of the real Fox Theatre came down hard on them -- said the possibility of confusion with the Fabulous Fox was enough to infringe their trademark. At the very least, said the Fox people, someone might think The Other Fox was somehow affiliated with the Fabulous Fox. The Other Fox changed its name. (I wanted them to change it to "The Other Wolf", which I thought would leave them safe, but they didn't.)

The other example: "Wash U". It's a laundromat on Hampton Ave., and they not only use the name of that large university, but they use the same font found on the university's sweatshirts. But they've gotten away with it for at least ten years, probably because they successfully argued that no one was likely to mistake a laundromat for a university.