Spacius! A Space Adventure
Get nostalgic with this old-school shoot 'em up. Oh, and it's written in JavaScript.
Link archive: July 8th, 2008
Opera Web Standards Curriculum
Opera have unveiled the Web Standards Curriculum. It's released under a CC attribution non-commercial share-alike license and it looks like a very valuable resource.
Grid Calculator
A handy tool for calculating grid and gutter widths although you'll still have to some calculating to get the figures to work in percentages (assuming you're designing for the Web).