BBC Four HD Schedule, Today (United Kingdom)

1/3. Miranda Hart explores the life of her comedy idol, Eric Morecambe. [S,AD] [HD]

1/3. How America's three great mountain ranges challenged the westward push of the pioneers. [S,AD,SL] [HD]

Programmes start at 7.00pm. [HD]

Programmes start at 7.00pm. [HD]

The BBC celebrates the Forces' Sweetheart with a look back through the archives at some of her favourite performances and biggest hits. [S] [HD]

Barbara Woodhouse, in conversation with Joan Bakewell, reveals some of the highlights of her life. [S]

Barbara Woodhouse demonstrates the most vital exercise of all, which should preferably be taught at an early age before a dog becomes too interested in scents and other dogs. [S]

Barbara Woodhouse demonstrates an emergency exercise where the dog is required to stop instantly in the stand, sit or down position. Correct tone of voice plays a vital part. [S]

Dame Helen Mirren looks back on her role in Dennis Potter's seminal 1979 TV drama. Contains some strong language. [S] [HD]

Dennis Potter's play of lost innocence sees an adult cast playing children during wartime. Deals with adult themes. [S] [HD]

Alan Yentob interviews TV dramatist Dennis Potter about his work through the years, touching on subjects such as why and how he started writing and his attempt to enter politics. [S]