Bookmarked:
Laws of UX lawsofux.com
A beautifully designed collection of laws that apply in UX (e.g. Fitts’ law, and some of the gestalt laws), with introductory texts on their origins and links to related resources. By Jon Yablonski.
Update: In 2020, Jon Yablonski published an extended book version of the “Laws of UX”; for 2022, another release is planned as a card deck