Lynn C. Hattendorf Westney, Associate Professor and Assistant Reference Librarian at the University of Illinois, Chicago, presented a wholly fun paper at the 35th Annual Congress of the Social Sciences and Humanities in Quebec back in May of 2001. Title of the paper: Dew Drop Inn and Lettuce Entertain You: Onomastic Sobriquets in the Food and Beverage Industry. And its subject matter: examples of "international onomastic appellations [that] demonstrate that the names of contemporary dining and drinking establishments serve as semantic and/or humorous reflections of societal mores."
Westney seems never to have heard the editor's aphorism I learned many years ago to "Kill which's wherever you find them." If you can overlook her ubiquitous use of the word, however, I think you'll find the paper--that consists, primarily, of "names in the food and beverage industry which reflect contemporary culture and which are characterized by their amusing and titillating patronyms and puns"--quite a bit of fun to peruse.
From coffee shops
Oh! But while looking for photos to grace this page
I didn't record them all. But here's one I enjoyed: Creative Shop Names.