The Vulgar Unicorn, the World Serpent, the Welcome Wench, even the Boar's Head. These names are often more famous that their patrons. 
What are some of your favorite bar names from D&D, fiction or even real life? 
Hang's Bar in a nameless mill town in the Eastern Frontier is from my homebrew campaign, which also has the Silver Mermaid. . 
The Slaughtered Lamb is a real bar in NYC. Werewolf theme.