You can find allsorts of links and resources for Role Playing and Collectable Dice Games here.

Role Playing Games

RPG News The latest updates and info for the RPG community. 

www.dndonlinegames.com Good for Dungeons & Dragons.

Myth Weavers Premiere site for play-by-post.

RPG Shop.com Supplies games and dice and stuff.

About.com RPGs Site for RPGs updated.

Chris's Free RPG Games Lots of links to FREE pen-and-paper RPGs. 

RPG Hoard Resources, articles, and more for RPGs. 

RPG.NET RPG news and shop.

RPG Nation A community for RPG players with chat, "play-by-post" resources and more.

RPG Game Design Sites & Resources

RPG Industry A site for professionals.  Find local retailers, join in the forums, resources, jobs, share information, and more.

RPG Writers Club 

The Forge  RPG design community.  Check out the Indie Design Forum, and read the stickies, lurk and absorb the articles too. 

rpg-create A list discussing the creation of Role Playing Games (style, mechanics, genre, etc).

Story-Games  RPG game design site dealing with "story games" or games focused on narrative. 

Random Number Generators

Hot Bits Random Numbers A site that generates random numbers by radioactivity.
Random.org A site dedicated to random number generation using atmospherics.
 

Collectable Dice Games