del.icio.us a bookmarking website, i just use it as a source of interesting links. seems to be updated every time i click the refresh button.
ruby take the hassle and pain out of programming by learning ruby, a high level programming/scripting language. not only is it easy to use and flexible, it can also be integrated with Java or C, so you're not throwing your existing skills away.
shacknews games news, updated daily with interesting features like 'late night consoling'