Shooting Big Cities at Night While Traveling Light

(from LifeHacker.com)

Flex Tetris Tutorial

Insight on how to program a Tetris game (specifically, in Flex, but the game concepts are valid in any language).

(from DZone.com)

150 HDTVs' power consumption compared

(from Il Disinformatico)

10 Essential SQL Tips for Developers

(from DZone.com)

Cleaning Your Laptop Cooling System

(from LifeHacker.com)

How to store preferences?

(from DZone.com)

10 Ways to Improve Your Code

Video presentation.
There's a link to a PDF file in the comments.

(from DZone.com)