S60 Platform provides a better UI library which looks and works better than J2ME LCDUI. Download S60 Platform SDK for java here and also the eSWT plugin for a better mobile development experience!
Another advanced UI library is AGUI which is under JSR specification. But very little phones will have this JSR package (right now only SavaJe phones), therefor it is a long wait before it can be practically used.
Good resource:
http://gorkem-ercan.blogspot.com/