This weekend on A Prairie Home Companion, an Irish Stew for all the fair haired Emerald Islanders in celebration of the feast of St. Patrick. The late Frank McCourt reads from "Angela's Ashes," Billy Collins reads "Afternoon with Irish Cows," and Karan Casey sings a song she learned from Frank Harte called "The Brown and Yellow Ale." Martin Sheen appears in The Lives of the Cowboys as James Joyce, Sean O'Driscoll sings "Farewell to Ballyshanny," and Altan performs "I Wish My Love Was a Red Red Rose." Plus, what "Irishness" means to Lake Wobegoners and grab the hankie for dear old "Danny Boy."