Barence writes "You may be aware of Donald Knuth, the creator of TeX and author of The Art of Computer Programming, who used to post checks to anyone who spotted an error in one of his books — one hexadecimal dollar, or $2.56. No one cashed them though. This blogger has two of them proudly on his wall, but the sad news is that modern day bank fraud has put a stop to Knuth's much-loved way of keeping his books free of errors." (Here's Knuth's own post about the sad change.)

Hothead Games has announced that the second episode of the Penny Arcade: On the Rain-slick Precipice of Darkness series is coming out this Wednesday, and they've released a trailer showing off some of the gameplay. ACG has an interview with Hothead's Joel DeYoung discussing the series and explaining some of the decision-making that went into its development. The game will launch for Linux, Mac, PC, and Xbox Live, with a PS3 version coming later. Feedback from players of the first game in the series inspired a $5 decrease in price this time around.

Anonymous writes "Here's a step-by-step look at building a PC with the new Antec Skeleton PC chassis. It's obviously not for everybody, but at least Antec is trying out something relatively new for hard-core users. Not sure if you'd need an air spray can to keep the dust off all the components, though ..."