Physics - Canadian TV's Eureka, if you can get hold of it or watch it on YouTube. We ALL learned so much

Astronomy (& Philosophy) - try getting Carl Sagan's Cosmos DVDs. A bit iconoclastic for those less secular folk but what an introduction, what a mind opener!

Numerous talking books about Scientists and their inventions, suchas:
http://www.amazon.co.uk/Great-Scientists-Discoveries-Junior-Classics/dp/9626344407/ref=pd_sim_b_7

These are not going to give the full "D=M/V" or "E=MC2" - well maybe "Eureka" will - but so much of science is in the thinking and thought which is often drowned out by the mechanics of the maths - which will come.