I never can get enough stories about Richard Feynman. I thought I'd heard them all, but somehow I missed this one. It's well written and captures many of the things he worked on later in his life; not to mention it's a really cool article about the beginnings of a rather ambitious project to make a parallel computer in the early 1980s.
Honest benchmarks. Open and gracious group of developers behind it.
Disclaimer - I'm married to one of these guys. I'm not a programmer, but I can see how hard this group has worked to provide something useful to the community and I've enjoyed watching it grow.