William the Conqueror:
The Warlord starring Charlton Heston Good for costumes and for attitudes, nothing about William himself.
Stephen and Matilda:
The miniseries: Pillars of the Earth A point of view by peasantry, but some glimpses of society and the lives of Stephen and Matilda and the havoc they wreaked. The book is a better choice.
A Lion in Winter with Peter O'Toole and Catherine Hepburn... lots of departures from history, but a good taste of the time period and personalities.
Becket with Peter O'Toole and Richard Burton
Richard and John:
Ivanhoe one with Robert Taylor and one by A&E
Robin Hood with Errol Flynn
Kingdom of Heaven with Orlando Bloom
Braveheart with Mel Gibson
The Six Wives of Henry the Eighth with Charles Laughton
A Man For All Seasons Paul Scofield and Richard Shaw
Anne of the Thousand Days Genevieve Bujold and Richard Burton
Elizabeth Cate Blanchett
Elizabeth The Golden Age Cate Blanchett
Shakespeare in Love with Gwyneth Paltrow and Joseph Fiennes, though a comedy, it gives a feeling of the times.
Mary Queen of Scots Vanessa Redgrave
Charles I :
Cromwell with Richard Harris and Alec Guiness
Restoration with Robert Downey Junior Though a comedy, it gives a feeling of the time.
The Madness of King George with Nigel Hawthorne and Helen Mirren
Victoria and William IV:
The Young Victoria with Emily Blunt
The King's Speech with Colin Firth
The Queen with Helen Mirren
Then there are the Shakespeare plays in cinema:
Henry V, Henry VI, Richard III
Go to YouTube and search for the names of the king or queen, or search for History of the Kings and Queens of England a great series and not too long and drawn out.