Over at Fast Company Design, there's a great short article on the difference between a font and a typeface.
I'll admit to being one of those pedants whose teeth grind when the two get confused by people who should know better. I have a slug (a clumping of metal type) on my desk that I use to explain this to my interns and minions.
For the curious, some great typography books:
And just for fun, a game to test your kerning skills: KERNTYPE, a kerning game.