TV Highlights Saturday
Doctor Who: The Day of the Doctor
In this 50th anniversary special episode, the Doctor's (Matt Smith, right) past comes back to haunt him as he uncovers a murderous plot in Elizabethan England while something terrifying stirs in London's National Gallery in the present day. Live International Rugby
Gabby Logan (right) hosts coverage of Scotland's clash with Australia at Murrayfield, with the home team going for a remarkable three wins in a row against the southern hemisphere side.The Jonathan Ross Show
'X Factor' judge Gary Barlow (right) joins Jonathan to discuss his last season on the show and his ongoing solo career. Other guests include Simon Pegg, the terrifying Dame Edna Everage and actress Michelle Keegan.Killing Kennedy
Channel 4, 9.00pm
For the anniversary of the JFK assassination, this feature-length docudrama recreates the last days of John F Kennedy's presidency, and examines the twisted motivations of the man who killed him. With Rob Lowe (right).