Why Wikipedia rules: anyone can add to its articles. Case in point: This nice article about the Playstation 2. I doubt conventional encyclopedias would go into this much detail about a video game console.
Why Wikipedia sucks: anyone can add to its articles. Case in point: this particular portion of that aforementioned Playstation 2 article (screencap):
** IEEE 1394 removed in SCPH-50000 and later hardware versions, and Infrared buttplug remote port and a king-size dildo adaptor added.
