With Ada Lovelace Day fast approaching (Oct 13) the BBC has released a timely documentary all about her called "Calculating Ada: The Countess of Computing". This is the first documentary I've seen dedicated to Ada Lovelace and I learnt a lot. For instance I didn't know that she lost a fortune gambling on horse racing. She believed she could calculate the odds better than the bookmakers - she was wrong. The doco is available on YouTube, though I expect it will be taken down soon; otherwise it can be viewed on the BBc iPlayer.