Made for BBC 1, this series was the kind of thing the BBC did really well - expensive, well-mounted period drama, this time based on Agatha Christie's Belgian (not French) detective 'Poirot' (rhymes with 'Kitaro', before you ask). At the time he was the most obscure of Christie's heroes, and this series rectified that in style. David Suchet (who, like all British actors, has played the bad guy in a Hollywood film - this time 'Executive Decision) played the character to perfection - fussy, pedantic and always right, he was nonetheless charming and an enormous hit with women of a certain age. The 1920's art deco presentation, especially the title sequence, worked well, and the atmosphere of dapper sophistication was a welcome change from the more homey Miss Marple. Technically the series is still going, although it's restricted, 'Inspector Morse'-style, to one-off specials.