Not to everyone's taste, but Mrs Brown's Boys is widely watched over the festive season. There's precious little concession to the holidays in this New Year special - more, as ever, a procession of near-the-knuckle jokes, delivered while the cast try their hardest (not always successfully) to avoid laughing. Tonight, Robert Bathurst guests as a surprise visitor to Foley's Bar. He has designs not on Kathy (who has "been on so many blind dates she needs a guide dog") but on Agnes Brown herself.