Duffy's Tavern, starring Ed Gardner as bartender Archie, graced the airwaves from 1941 through 1952. Duffy himself was never heard, but phoned the tavern every episode. Duffy's was billed as the place where "the elite meet to eat", but the normal clientele was definitely working class Irish.
To spice things up, there were frequent guest star appearances by singers and movie stars.
Here is a sample of the online episodes currently available at The Old Time Radio Fan: