Irish-American songs are most often what people in the USA expect. Depends on the age group. If the folks are old, they know the "gay 90's" stuff like The Band Played On, K-K-K-Katy, Rosie O'Grady & the like. Varied age group, Irish Eyes Are Smilin, etc. If you want to do something for folks to chuckle about, try Paddy McGinty's Goat or MacNamara's Band--often done with a chorus of If You're Irish Come Into The Parlour before the last verse. Cheers!