3 approaches to productivity, reviewed by a comedian freelancer

http://www.wired.com/culture/lifestyle/magazine/17-01/mf_self_help?currentPage=all

"Freelancer (and funny guy) Chris Hardwick read and tried Getting Things Done, The 4-Hour Workweek, and Never Check Email in the Morning and reports back which productivity systems worked best for him."

I just read this article in Wired today, and then tonight, here it is in my Lifehacker RSS feed... worth sharing, so, I'll share! I've read, and live by "Getting Things Done"  but after reading this short, light review, I am interested in the other two books mentioned as well.

Have you read either of those? Do you use them? I'd love to hear from anybody using wisdom gained from either of these additional 'GTD' methods.