In reply to dissonance: Track down anything by Richard Feynman.
If you're feeling particulary brave bit torrrent his lecutres on phyiscs - litterally hundreds of the things and absolutely facinating (and largely up to date, basic phyics hasn't moved on that much since the 60's). If you want a gentle introdcution try "Surely you're joking mr Feynman".
By all accounts the guy was a bit of a legend (in addition to being the cleverest guy in the room).
If you fancy some more current affairs type science / maths download Radio 4s More or Less podcast and the american equivlent "Planet Money" (search for NPR Planet Money on itunes)