I am pretty excited about this new version of the CAML Builder Karine created and released yesterday. There are many enhancements that you are probably going to like. You can read all about these in her latest blog posting. I definitely like the ability to immediately copy and paste the code snippet for the execution of the CAML query that is constructed. Lovely! And of course also the support for complex queries with date and times, as well as recurring items (very useful with events).
Anyway.. download it, test it, let us know if we are missing something. We still have plenty of ideas for a next version but if you have some, let us know. Kuddos to Karine for doing all of the work!