Communities I really like

[charisma]

Some communities that I think are pretty sweet

Music exchange
buzz_bin
indie_exchange
ljmixtape (join now, membership is only open for a limited time- it's freaking huge)

Games
matchgame_com - it's the Match Game! I have so much fun with this. More people should play.
ferstaal - Rick's fantasy intrigue rpg
mittilagart - Niki's game set in a too-perfect Iowa town with demons! Woo!
serenityrpgs - this one I made. It's to advertise firefly/serenity type rpgs

Writing Prompt/Topics
15minuteficlets
1character
deviant_muses
dialogue_500
iron_author
promptlywriting
writers_almanac

Writing critique
write_away
heart_on
poetryslamming
urbis_writers

Other cool stuff
dandelionstudio - Dandelion Studios blog- see all the nifty things Rick and Gynn are up to
freestuff Stuff for free!
ff_shepherds Get your friends into Firefly/Serenity
arcology my site/project update community
kvs_poems Kevin's poems- friends only so you have to join to read them, but they're good poems
kvsdeepthoughts Deep thoughts by Kevin, also friends only
myspace_deaths Myspacers who died!

What communities do you like?