DailyEdge.ie rounds up the TV shows that you’ll be tweeting about tonight and talking about tomorrow.

Big Week On The Farm (RTÉ One, 7pm)

For one week, RTÉ stars have decamped to a farm in Castlepollard, Co Westmeath as it comes back to life in the spring. It’s hoped that we’ll get to see a live lambing during the week, but for now we get an insight into the secret lives of cows and Evelyn Cusack getting her hands dirty. #onthefarm

Sex Box (Channel 4, 10pm)

The controversial show returns for a second season – in the first episode, a student prepares to lose her lesbian virginity and sexologist Goedele Liekens coaches a couple in erotic massage. Don’t watch it with your mam. #sexbox

The People V OJ Simpson (BBC2, 9pm)

It’s the eighth episode of the season, meaning we have only two episodes of this excellent show left to enjoy. Boo! Tonight, the frustrations of the sequestered jury mount and DNA evidence troubles Robert Kardashian. #peoplevsojsimpson

Everybody’s talking about: Sherlock

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Season four of the hit show begins filming today, and fans are already planning to head to the set to catch a glimpse of the stars.

The #Setlock tradition (as it has been nicknamed) is controversial in the fandom, as people worry about spoilers leaking and fans bothering the cast and crew. But that never stopped them before…

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Or flick over for…

• The Vikings Uncovered (BBC1, 8.30pm) Host Dan Snow searches for evidence of Viking settlements in America to prove they were there before Columbus.
• Chasing Shadows (UTV Ireland, 9pm) New series following a missing persons unit on the hunt for serial killers.
• A Home at the End of the World (TG4, 9.30pm) Colin Farrell stars in this drama based on the book by Michael Cunningham.
• Plebs (ITV2, 10pm) The Roman sitcom returns for a third season.
• Sleepy Hollow (Film4, 11.15pm) Tim Burton directs Johnny Depp in this creepy horror.