Ear to the Ground
RTE1, 8.30pm In tonight's round-up, Ella McSweeney discovers how a new database containing the DNA profiles of every boar raised in Ireland will make it easier to trace the provenance of pork.
Helen Carroll meets William Bunbury, the creator of the Bunbury chopping board, and learns how his business has revived the fortunes of his estate in Co Carlow.
BACK ON THE BEAT
RTE1, 11.15pm In a new series of the crime drama starring Nathan Fillion (left), Beckett returns to active duty several months after being shot, but struggles to regain her confidence -- leaving Castle (Fillion) worried that she is putting herself in danger.
Live Uefa Champions League Napoli v Chelsea
TV3, 7.30pm Tommy Martin presents all the action from the last-16 first-leg encounter, at the Stadio San Paolo.
There's commentary by Trevor Welch and Mark Lawrenson, and analysis by Tony Cascarino and Martin Keown. Kick-off is at 7.45pm. Plus, there are highlights of CSKA Moscow v Real Madrid.
LOVE AND LAW
Big Fat Gypsy Weddings
Channel 4, 9pm Romany gypsy Ambrose prepares to take part in an illegal horse-and-trap race, but faces a challenge to reach the finish line before the police can catch him, while Irish Traveller Mary Louther and her family face eviction from a site in Leeds.
Elsewhere, 15-year-old Danielle gets ready for her hen party.