There is a restaurant at 2, The Mall in Bristol called 'Omnibus'. Not hilarious, but it takes a while to get the (admittedly feeble) joke.

Among the many Thai restaurants in Newtown, Sydney, there seems to be a contest to use the worst possible pun. Beau Thai, Thai Foon, Old School Thai, Thai Pinn... I believe that somewhere, there is even a 'Thai a Yellow Ribbon'...

Finally, and slightly off topic, a friend, who took a holiday in Bangladesh, returned with a photo of a blackboard advertising a restaurant: "Come and visit our lovely garden, far from the maddening crows!"