I seem to spend a large amount of time helping people to get data back out of CiviCRM. I'm a big fan of the reports framework and up until 4.2 I made a number of improvements to the core reports for my customers. However, from 4.2 I switched to doing reports in an extension. I have been doing almost all my reports in the extended reports extension and have been playing with a few ideas in that extension. Some of them are well developed, others are in the early stages.