BBC Scotland (the glories of iPlayer) has just run a documentary on James Clerk Maxwell; I'm saddened that BBC doesn't think it worth running the programme for the whole of the UK. http://www.bbc.co.uk/programmes/b06rd56j
They say you halve your audience with each formula in a talk, any talk about Maxwell is going to have four formulae in it, the secret is to put them at the end... or a subliminal frame; science by blipverts!
I take it Egyptology has this problem with hieroglyphs.