Finance channel again: XKCD shows you money: All of it. :-) http://imgs.xkcd.com/comics/money.png Genius. Just like the radiation chart they posted back in March or so. I love how they show the cost of the stuff from the song "If I had a million dollars". John Merrick's remains are not for sale.
Computer channel: James Fallows writes about how his wife's Gmail account was cracked, her online life destroyed (and recovered!) and what it means for any of us with online lives. Also a peek inside Google: attitude toward data security, cloud based learning, and what it means to be "data driven". http://m.theatlantic.com/magazine/archive/2011/11/hacked/8673/1/
Computer channel: If you ever have to think about concurrent multiprocessors, this is an excellent place to start, focused on x86: http://www.cl.cam.ac.uk/~pes20/weakmemory/cacm.pdf (preprint of an article from the July 2010 Communications of the ACM)