Community

Here are some nice active community resources for discussing Minecraft:
Please note that all of these are third-party and aren't hosted by us. We link them because they're great.

Official Resources

The Word of Notch - The one and only blog for Minecraft fans
@Notch - Follow notch's ramblings on twitter
Facebook - Join our community on Facebook
Get satisfaction - Give some feedback, make your voice heard.
Minecraft forums (Official forums, Notch reads these)
Minepedia - Comprehensive community run Wiki

IRC

#minecraft on irc.esper.net - Official IRC channel, run by Notch. (channel rules)
#MineCraftHelp on irc.esper.net - Help and support from community members.
#mcchatter on irc.esper.net - For general community chatter. (channel rules)

Forums and communities

MojangSupport - Unofficial support by Tom Costello
Minecraft Community on Steam - Over 1000 members!
Minecraft on Reddit
World of Minecraft
CraftHub
Minecraft on Mod DB
Minecrafting.ru (in Russian)
Minecraft forum (in Spanish)

Galleries:

The Minecraft Museum

Indie game development

Want to make your own game? Want to see what games other people are making?
TIGSource - Lots of talent! Minecraft originated here.
JavaGaming.org - Other java game developers. Neglected after Oracle took over.
Indie Games - The blog is awesome, and so is the podcast.
Ludum Dare - A 48 hour game development competition.

And some of my friends who are also making games:
Project Brutal dev blog - Hell of a nice guy, who I used to work with.
increpare games - One of the smartest people I've met.
DEVM-Games - Another talented coder I used to work with.
Wurm Online - I don't see Rolf as often as I'd like.
distractionware - One of my idols, made VVVVVV.
I probably forgot a bunch of people..