How the Crinan Canal cut journey times for boats travelling up the West Coast of Scotland.
Action includes the men's keirin and 40km points race.
127/140 Jeremy Vine hosts a general knowledge quiz featuring the UK's top quiz champions.
10/15 The team share some trade secrets on when damage definitely doesn't have to mean disaster.
20/45 The two remaining North East chefs must cook their entire menus for the judges. (R)
25/31 Five contenders compete in the first semi-final. Subjects include the sitcom Rising Damp.
2/6 Phyllis and Werner tell a wartime love story and giant horse Ronaldo arrives on the island (R)
1/3 Featuring the snow-white oryx, the long-legged jerboa and glow-in-the-dark scorpions.
13/18 With Sarah Millican, David Mitchell, Rev Richard Coles and Alan Davies. (R)
Simon Hughes and Peter Tatchell go face-to-face 30 years after the Bermondsey by-election.
Kirsty Wark and guests give their verdict on the Oscar nominees.
2/3 How music came under state control in the 1930s and serialism took over after the war.
Saturday 23 February 2013