I've never really liked navigating and searching through JavaDoc files, so when I got into BlackBerry development a few months ago one of the first things I did was look for a .CHM (Compiled Microsoft Help) version of the RIM Device Java Library docs.
When I couldn't find any, I made them myself. I've put them up on my website, in case anyone else finds them useful. I've got the 4.0.2 and 4.1 JDK up.
http://www.jou.ca/
eeksock