Repeats are not indicated.

6.15 Edison - the Invention of Invention

7.05 Whose Body?

7.35 Marin Mersenne - the Birth of Modern Geometry

News roundup, with Bill Turnbull and Sian Williams. Weather update at 8.25.

Another chance to enjoy the spectacle of yesterday's Winter Olympics opening ceremony, from the Olympic stadium in Salt Lake City, USA. The traditional fanfare, with commentary from Barry Davies, combines music, dance and culture in a flamboyant jamboree. Presented by Hazel Irvine. The first medals are settled tonight as coverage continues at 10.30pm.
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BBCi: special interactive features are available to digital viewers by using the red key on their remote control
The best of British: page 20

A report on the progress made in the recognition of British Sign Language since campaigners marched through central London last July.
Presented by Lara Crooks. With sign language and in-vision subtitles.

The architectural-appreciation series sees Tony Benn visiting the revolving restaurant at the Post Office Tower, and actress Jean Alexander recalling the golden age of Liverpool's libraries.

Introduced by Sue Barker.
Tennis - Davis Cup
Following yesterday's opening two singles clashes, coverage from the National Indoor Arena in Birmingham of the potentially decisive doubles rubber in Great Britain's World Group first-round tie against Sweden.
The Swedish team is likely to feature new Australian Open champion Thomas Johansson and Jonas Bjorkman, the conqueror of Tim Henman at the same tournament.
John Barrett, David Mercer and John Lloyd provide the commentary.
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Snooker
From Wembley Conference Centre, the first of today's Benson and Hedges Masters semi-finals. The match is the best-of-11-frames and the winner is guaranteed a prize of at least 195,000. Live coverage is presented by Steve Davis and John Parrott, with commentary from Clive Everton, Dennis Taylor, Willie Thorne and John Virgo.
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Andrew Rawnsley of The Observer reviews the press

Presenter Michael Berkeley concludes the series exploring landmark 20th-century orchestral works with an examination of Shostakovich's Fifth Symphony: a Soviet Artist's Reply to Just Criticism.
Written in the shadow of official criticism of his latest opera, and at the peak of Stalin's purges, this piece re-established Shostakovich as an ideologically sound Soviet composer, and remains one of the most popular of all 20th-century symphonies. Russian conductor Valery Gergiev leads the BBC Symphony Orchestra in a performance of the work.
BBC MUSIC MAGAZINE: monthly. £3.99. New issue on sale 12 February.
Let the music speak: page 17

Continuing the first-series rerun of the acclaimed political comedy, originally shown in March 1980.
James Hacker encounters resistance from Sir Humphrey when he tries to have privacy safeguards implemented for the new national computer database.
BBC DVD: Yes, Minister, complete series one, price £12.99.

Coverage from Wembley of the second semi-final at the Masters. Defending champion Paul Hunter came into the tournament in fine form after defeating Ken Doherty to take the Welsh Open. Both semi-finals at this stage last year ended 6-4, with Hunter edging out Stephen Hendry, while Fergal O'Brien ousted Dave Harold. Presented by Ray Stubbs, with Steve Davis and John Parrott. Coverage of the final starts tomorrow afternoon.

The highlight of today's events on the first day of competition at Salt Lake City is the women's moguls at Deer Valley, where Norwegian world champion Kari Traa is widely expected to better her bronze-medal performance in the freestyle-skiing event at Nagano four years ago.
There's also a look ahead to tomorrow's men's downhill, plus news of Britain's Lesley McKenna's preparations as she bids for a snowboarding half-pipe medal, and Glynn Pedersen's training for the K90 ski jumping. Introduced by Clare Balding and Steve Cram.
The best of British: page 20

Period drama based on the real-life relationship between mobster Sam Giancana and singing star Phyllis McGuire. In 1960, Chicago crime boss Giancana begins a romance with the lead singer of the McGuire Sisters, but his associates are worried that the publicity will bring unwanted attention to their illegal activities. Review page 53. (1995, 18) **

Crime thriller starring Terence Morgan. A crook romances an ambassador's daughter when he learns that her father has gone away on business, leaving a large sum of money in the embassy safe. Review page 53. (1960) (BW)

Repeats are not indicated.
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