TV Highlights Tuesday
Carols from Dublin Castle
RTE One, 6.15pm
Mary Kennedy (right) introduces a glittering festive show from the magnificent setting of Dublin Castle's state rooms and chapels, with traditional songs and performances from Finbar Furey, Celine Byrne, Tommy Fleming, Nathan Carter and the Choir of St. Bartholomew's Church.Mel Smith: I've Sort of Done Things
Tribute to Mel Smith (right), who died during the summer at the age of 60. After achieving early success with 'Not the Nine O'Clock News', Smith went on to become a writer, film director and very astute businessman.The Zoo Christmas Special
RTE One, 7.15pm
The keepers (right), share their favourite animal stories from the past year, from the arrival of a five-and-a-half ton bull elephant called Upali to keeper Brendan's journey to Borneo in search of orangutans. Midsomer Murders
Barnaby gets a new partner in this brand new episode. But while it may be Christmas, death takes no holidays and Charlie (Gwilym Lee, right) is just familiarising himself with his new beat when he's embroiled in a nasty investigation.