BBC 4 are having an 18th century season this summer, starting sometime in June. There should be programmes on Hannah Glasse, the Scottish Enlightenment, Beau Brummell, and hopefully other things as well. Details, clips and links to articles, recipes and 18th century works are at the BBC4 web site (worth a look even if you don't get BBC4, as the programmes may appear elsewhere eventually, and the links would work in any case). I'm not sure we can rely on there being much depth, but it looks interesting all the same. I'm definitely setting the video for the Hannah Glasse series!