The Crazed Cannibal ("serving all kinds of people for over 10 years")
Elminster's Harem (gives new meaning to "The Chosen of Mystra" ...)
The Tower of High Sorcery
Menzoberranz-Inn
The Gelded Ranger
Snack of the Archlich
The Bowels of Vecna
Castration Palace
Bar-B-Aatezu and Grill
House of Pain
Red-shirts' Inn
The Otyugh's Lair
The Random Encounter
At Least the Mead is Warm ...
Notell Motel
Bates Motel
We Hate Mages
The Lucky Louse
Keep Out
The Amityville House o' Fun
Zhentil Keep
Bob's House of Toast
The Speling Flayme
The Tortured Adventurer
The Angry Munchkin
The Angry DM
The Unfortunate Stain
Encounter 5A
The Lich's Foot
International House of Flumphs
The Tomb
Lost Taverns of Tsojcanth
Puke and Go
Tequila Wyrm
The Inn Definitely Not Run by Doppelgangers
Green Slime-O-Rama
Rot Grub Pudding Restaurant
The Illusionary Floor Inn (a.k.a. "The Dew Drop Inn")
The Undead Eatery
The Grassy Gnoll
The Gassy Gnoll
Cheers: Where Eveybody Knows Yer Moniker.
The Inn of Last Resorts
The Restaurant at the End of the Universe
The Tavern of Elemental Evil
Undermountain II
The Paranoid Bartender
The House of the Blue Balls
Strahd Slept Here
Hastur, Hastur, Hast__
The Golden Arches
The Secret Meeting Place
The Puking Palace
The Abyssal Gate
Heartbreak Hotel
International House of Long Pork
Ye Olde Saving Throw
Microsoft(R) Inn98(R)
Werebeer
The Open Grave
Procrustes' Rooms For Rent
The Scarlet Neighborhood Tap & Grill
Socrates' Bar & Pub
Inn of Horrors
The Tavern With a Man Shrouded In Darkness In the Back Corner
Hey, We Don't Like Your Kind In This Here Inn
Kill the Adventurers Inn
Inn on the Borderlands
Still Smoking Inn
Ground To A Paste Tavern
Hell's Kitchen
Acererak's Saloon
House of Strahd
Ye Olde Flophouse
Beshaba's Kiss
The Rose of Dorakaa
Inn Iuz We Trust
The Uncursed Inn
The Gaping Maw (big red doorway, completely dark inside...)
The Angry Wizards' Soda Fountain
The Slaughtered Lamb
The Thieves' Den
Pressgang Hostelry
Caveat Emptor
Parasite Palace
Hotel California
Kobold's Delight
The Closing Coffin (particularly in Ravenloft)
Blue Oyster Bar
The Scape Goat
Run For the Border
The Cute Fluffy Bunny Inn
The Plague
The Towering Tavern O' Terror
The Retching Slattern
The Save or Die Inn
Ye Olde Plot Device
The Inn Where You can Get Into Lots of Fights, and Maybe Even Get Started on
an Adventure or Two
The Inn of a Thousand Whirling Sledgehammers
Inn of the Damned
Chateau d'Amberville