Sony

Absolute PlayStation Europe
Information, reviews, cheat codes, features, previews, and tips.
http://www.absolute-playstation.com/

Amateur Playstation Tour
Playstation tour open to new members in Northern California.
http://aptour.com

CentreSoft.co.uk
The UK's official distributor of PlayStation hardware, peripherals, and first party software.
http://www.centresoft.co.uk/

DarkStation.com
Reviews, previews, codes, and FAQs.
http://www.darkstation.com/

PlayStation.com America
The official site for North America.
http://www.us.playstation.com

Playstation.com Australia
Official Australian Sony site.
http://au.playstation.com/

PS News and Pics
Previews, reviews, help requests, downloadable demos, and movies.
http://www.angelfire.com/ca4/ps2/framesite.html

PSX A2Z
Contains descriptions, features, reviews, covers, screenshots, codes, tips, and controller for PlayStation and PlayStation 2.
http://www.psxa2z.com/

PSXExtreme
Reviews, previews, cheats, codes, walkthroughs, screenshots, and news.
http://www.psxextreme.com

Sony PSP Rumors
Offers rumors and news.
http://psprumors.com