It’s not too late to start watching the superb US drama Justified (9.20pm, TG4), while both The Saturday Night Show (10.05pm, RTÉ One) and The Jonathan Ross Show (9.35pm, UTV) offer chat show entertainment, and perennial medical drama Casualty (9.20pm) continues on BBC1

Justified, 9.20pm, TG4

This modern western starring Timothy Olyphant as US Marshal Raylan Givens is an absolute hoot and TG4 deserve credit for showing yet another great US show. As season two continues, Rachel's recently paroled brother-in-law is on the run, and Raylan has to make sure Rachel's emotional involvement doesn't affect the case and he has to confront her past. Meanwhile, Boyd is approached about an illegal scheme, and the Bennett family begin to grow paranoid about Raylan's detective work.

The Saturday Night Show, 10.05pm, RTÉ One

In their first ever European chat show appearance Pussy Riot members Nadezhda Tolokonnikova and Maria Alyokhina join Brendan O'Connor. There's also a debate on homophobia, and Strictly Come Dancing’s Vincent Simone & Flavia Cacace will perform a special tango.

Casualty, 9.20pm, BBC1

This hospital drama has been running almost as long as the UK’s National Health Service and is almost as much a staple of Saturday night viewing on the Beeb as Ye Olde Match of the Day. This week,  Rita helps a rape victim gain the courage to press charges, while Zoe treats an eccentric veteran dancer who must face up to telling the truth about the daughter she put up for adoption.