I know I could probably put this into the YouTube videos thread but this is too important/good to get lost in there.

I've found a YouTube channel called Sixty Symbols CLICKY! which contains a series of videos film mostly in the University of Nottingham and stars several physics and astronomy professors.

Each video focuses on a particular symbol (hence the name) but they make it interesting, understandable and fathomable (i.e. without talking about numbers/sizes etc... that are beyond human comprehension).

It's a VERY good series of videos and if you would like to expand your physics knowledge even slightly then give them a watch.

It's a lot like watch 6 or 7 Brian Coxs explain physics type stuff.

Very good!

For those of a chemical bent there is also the Periodic Videos site/channel with some of the contributors from the 60 Symbols (IIRC the periodic videos one started it all).
Main presenter is a Prof. Polliakof (terrible spelling) who is the borther of the more famous Stephen.

Will prolly catch this up at the weekend.

Awesome videos, bookmarked for later perusal.