I feel like I'm always posting news on businessy topics. To balance this affliction against my inner geek, I sat down last night and wrote a tutorial on low power management on the ATmega328. Check out the Adventures in Low Power Land:
I got an ATmega328 to run down to 1uA!! I think I can generate more energy rubbing my fingers together than what this 8MIPS power house sips for power. Incredible! Checkout some of the lessons learned.