Java.net - J2ME Games Forum
J2ME games development forum. Hosted by java.net community.

Java.sun.com CLDC/MIDP Forum
CLDC and MIDP development forum. Hosted by java.sun.com.

Midlet Review - Midlet Forum
Everything about Midlets and Gamelets, J2ME, Mophun, ExEn, Brew, WGE - Mobile Gaming and Wireless Entertainment. Includes a development forum and company showcase forum.

MIDP2
MIDP 2 Forum

J2ME.org
Very active forum on J2ME

Wireless and Handhelds devicetop.com
Interesting site with a wide range of J2ME topics

Forums SonyEricsson MobilityWorld
J2ME forum around the Sone Ericsson Devices