Dean Martin's Celebrity Roasts were rarely funny and I have to wonder what Martin is really listening, but nobody could do a drunk like Foster Brooks. His timing was dead on.
As Wiki says:
His comedy routines as the lovable, but hilarious, drunk, were a testament to the art of comedy without the need for profanity or any other excessive blue humor
I kind of like that about him. Wiki explains that public sensibilities changed regarding alcoholics and public drunkenness by the 1980s, so Brooks moved away from his drunk character. He had a recurring role as Mr. Sternhagen, Mindy's boss on Mork & Mindy.
In spite of playing a drunk for most of his career, he rarely took a drink after making a $10 bet with a friend. He lived until he was 89.