Re:CSS Cheat Sheet (Score 2, Informative)

Visibone's HTML/CSS reference card is worth the $10. Nice four-page card that goes into a lot more detail on browser compatibility, CSS property values, how CSS relates with HTML, and so forth, yet manages to fit all the CSS stuff in one page.

(They also make a good JavaScript card from which I learned most of my JavaScript, as well as those nifty color charts.)